diff --git a/.gitignore b/.gitignore
index 018ce22a720d3..87021a2658d37 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,11 +9,11 @@ coverage.out
 *.test.bin
 tags
 profile.coverprofile
-explain_test
-cmd/explaintest/explain-test.out
-cmd/explaintest/explaintest_tidb-server
-cmd/explaintest/portgenerator
-cmd/explaintest/s/
+integration_test
+tests/integrationtest/integration-test.out
+tests/integrationtest/integrationtest_tidb-server
+tests/integrationtest/portgenerator
+tests/integrationtest/s/
 *.fail.go
 tools/bin/
 vendor
diff --git a/Makefile b/Makefile
index a599fbb28a6ce..b1a748119a3fc 100644
--- a/Makefile
+++ b/Makefile
@@ -32,7 +32,7 @@ buildsucc:
 
 all: dev server benchkv
 
-dev: checklist check explaintest gogenerate br_unit_test test_part_parser_dev ut check-file-perm
+dev: checklist check integrationtest gogenerate br_unit_test test_part_parser_dev ut check-file-perm
 	@>&2 echo "Great, all tests passed."
 
 # Install the check tools.
@@ -94,7 +94,7 @@ clean: failpoint-disable
 test: test_part_1 test_part_2
 	@>&2 echo "Great, all tests passed."
 
-test_part_1: checklist explaintest
+test_part_1: checklist integrationtest
 
 test_part_2: test_part_parser ut gogenerate br_unit_test dumpling_unit_test
 
@@ -118,9 +118,9 @@ test_part_br: br_unit_test br_integration_test
 
 test_part_dumpling: dumpling_unit_test dumpling_integration_test
 
-explaintest: server_check
+integrationtest: server_check
 	@mkdir -p $(TEST_COVERAGE_DIR)
-	@cd cmd/explaintest && GOCOVERDIR=../../$(TEST_COVERAGE_DIR) ./run-tests.sh -s ../../bin/tidb-server
+	@cd tests/integrationtest && GOCOVERDIR=../../$(TEST_COVERAGE_DIR) ./run-tests.sh -s ../../bin/tidb-server
 	@$(GO) tool covdata textfmt -i=$(TEST_COVERAGE_DIR) -o=coverage.dat
 
 ddltest:
diff --git a/build/nogo_config.json b/build/nogo_config.json
index 9e09050fc0840..d962e816e8ae1 100644
--- a/build/nogo_config.json
+++ b/build/nogo_config.json
@@ -287,7 +287,7 @@
       "tools/check/xprog.go": "ignore tools/check code",
       "cmd/pluginpkg/pluginpkg.go": "ignore cmd/pluginpkg code",
       "tools/check/xprog.go:": "ignore tools/check code",
-      "cmd/explaintest/main.go": "ignore cmd/explaintest code",
+      "tests/integrationtest/main.go": "ignore tests/integrationtest code",
       "GOROOT/": "ignore code",
       "server/internal/testserverclient/server_client.go": "ignore server_client code",
       ".*_generated\\.go$": "ignore generated code"
diff --git a/cmd/explaintest/README.md b/tests/integrationtest/README.md
similarity index 77%
rename from cmd/explaintest/README.md
rename to tests/integrationtest/README.md
index 28b1f8e9a793a..bab5155bafaa9 100644
--- a/cmd/explaintest/README.md
+++ b/tests/integrationtest/README.md
@@ -1,6 +1,6 @@
-# ExplainTest
+# IntegrationTest
 
-ExplainTest is a explain test command tool, also with some useful test cases for TiDB execute plan logic, we can run case via `run-tests.sh`.
+IntegrationTest is a integration test command tool, also with some useful test cases for TiDB execute plan logic, we can run case via `run-tests.sh`.
 
 ```
 Usage: ./run-tests.sh [options]
@@ -8,7 +8,7 @@ Usage: ./run-tests.sh [options]
     -h: Print this help message.
 
     -s <tidb-server-path>: Use tidb-server in <tidb-server-path> for testing.
-                           eg. "./run-tests.sh -s ./explaintest_tidb-server"
+                           eg. "./run-tests.sh -s ./integrationtest_tidb-server"
 
     -b <y|Y|n|N>: "y" or "Y" for building test binaries [default "y" if this option is not specified].
                   "n" or "N" for not to build.
@@ -28,7 +28,7 @@ Usage: ./run-tests.sh [options]
 
 ## How it works
 
-ExplainTest will read test case in `t/*.test`, and execute them in TiDB server with `s/*.json` stat, and compare explain result in `r/*.result`.
+IntegrationTest will read test case in `t/*.test`, and execute them in TiDB server with `s/*.json` stat, and compare integration result in `r/*.result`.
 
 For convenience, we can generate new `*.result` and `*.json` from execute by use `-r` parameter for `run-tests.sh`
 
@@ -45,7 +45,7 @@ make dev
 or
 
 ```sh
-make explaintest
+make integrationtest
 ```
 It will identify execute plan change.
 
@@ -54,7 +54,7 @@ It will identify execute plan change.
 First, add new test query in `t/` folder.
 
 ```sh
-cd cmd/explaintest
+cd tests/integrationtest
 ./run-tests.sh -r [casename]
 ``
 It will generate result base on last execution, and then we can reuse them or open editor to do some modify.
diff --git a/cmd/explaintest/config.toml b/tests/integrationtest/config.toml
similarity index 100%
rename from cmd/explaintest/config.toml
rename to tests/integrationtest/config.toml
diff --git a/cmd/explaintest/disable_new_collation.toml b/tests/integrationtest/disable_new_collation.toml
similarity index 100%
rename from cmd/explaintest/disable_new_collation.toml
rename to tests/integrationtest/disable_new_collation.toml
diff --git a/cmd/explaintest/r/access_path_selection.result b/tests/integrationtest/r/access_path_selection.result
similarity index 100%
rename from cmd/explaintest/r/access_path_selection.result
rename to tests/integrationtest/r/access_path_selection.result
diff --git a/cmd/explaintest/r/agg_predicate_pushdown.result b/tests/integrationtest/r/agg_predicate_pushdown.result
similarity index 100%
rename from cmd/explaintest/r/agg_predicate_pushdown.result
rename to tests/integrationtest/r/agg_predicate_pushdown.result
diff --git a/cmd/explaintest/r/black_list.result b/tests/integrationtest/r/black_list.result
similarity index 100%
rename from cmd/explaintest/r/black_list.result
rename to tests/integrationtest/r/black_list.result
diff --git a/cmd/explaintest/r/clustered_index.result b/tests/integrationtest/r/clustered_index.result
similarity index 100%
rename from cmd/explaintest/r/clustered_index.result
rename to tests/integrationtest/r/clustered_index.result
diff --git a/cmd/explaintest/r/collation_agg_func_disabled.result b/tests/integrationtest/r/collation_agg_func_disabled.result
similarity index 100%
rename from cmd/explaintest/r/collation_agg_func_disabled.result
rename to tests/integrationtest/r/collation_agg_func_disabled.result
diff --git a/cmd/explaintest/r/collation_agg_func_enabled.result b/tests/integrationtest/r/collation_agg_func_enabled.result
similarity index 100%
rename from cmd/explaintest/r/collation_agg_func_enabled.result
rename to tests/integrationtest/r/collation_agg_func_enabled.result
diff --git a/cmd/explaintest/r/collation_check_use_collation_disabled.result b/tests/integrationtest/r/collation_check_use_collation_disabled.result
similarity index 100%
rename from cmd/explaintest/r/collation_check_use_collation_disabled.result
rename to tests/integrationtest/r/collation_check_use_collation_disabled.result
diff --git a/cmd/explaintest/r/collation_check_use_collation_enabled.result b/tests/integrationtest/r/collation_check_use_collation_enabled.result
similarity index 100%
rename from cmd/explaintest/r/collation_check_use_collation_enabled.result
rename to tests/integrationtest/r/collation_check_use_collation_enabled.result
diff --git a/cmd/explaintest/r/collation_misc_disabled.result b/tests/integrationtest/r/collation_misc_disabled.result
similarity index 100%
rename from cmd/explaintest/r/collation_misc_disabled.result
rename to tests/integrationtest/r/collation_misc_disabled.result
diff --git a/cmd/explaintest/r/collation_misc_enabled.result b/tests/integrationtest/r/collation_misc_enabled.result
similarity index 100%
rename from cmd/explaintest/r/collation_misc_enabled.result
rename to tests/integrationtest/r/collation_misc_enabled.result
diff --git a/cmd/explaintest/r/collation_pointget_disabled.result b/tests/integrationtest/r/collation_pointget_disabled.result
similarity index 100%
rename from cmd/explaintest/r/collation_pointget_disabled.result
rename to tests/integrationtest/r/collation_pointget_disabled.result
diff --git a/cmd/explaintest/r/collation_pointget_enabled.result b/tests/integrationtest/r/collation_pointget_enabled.result
similarity index 100%
rename from cmd/explaintest/r/collation_pointget_enabled.result
rename to tests/integrationtest/r/collation_pointget_enabled.result
diff --git a/cmd/explaintest/r/common_collation.result b/tests/integrationtest/r/common_collation.result
similarity index 100%
rename from cmd/explaintest/r/common_collation.result
rename to tests/integrationtest/r/common_collation.result
diff --git a/cmd/explaintest/r/cte.result b/tests/integrationtest/r/cte.result
similarity index 100%
rename from cmd/explaintest/r/cte.result
rename to tests/integrationtest/r/cte.result
diff --git a/cmd/explaintest/r/explain-non-select-stmt.result b/tests/integrationtest/r/explain-non-select-stmt.result
similarity index 100%
rename from cmd/explaintest/r/explain-non-select-stmt.result
rename to tests/integrationtest/r/explain-non-select-stmt.result
diff --git a/cmd/explaintest/r/explain.result b/tests/integrationtest/r/explain.result
similarity index 100%
rename from cmd/explaintest/r/explain.result
rename to tests/integrationtest/r/explain.result
diff --git a/cmd/explaintest/r/explain_complex.result b/tests/integrationtest/r/explain_complex.result
similarity index 100%
rename from cmd/explaintest/r/explain_complex.result
rename to tests/integrationtest/r/explain_complex.result
diff --git a/cmd/explaintest/r/explain_complex_stats.result b/tests/integrationtest/r/explain_complex_stats.result
similarity index 100%
rename from cmd/explaintest/r/explain_complex_stats.result
rename to tests/integrationtest/r/explain_complex_stats.result
diff --git a/cmd/explaintest/r/explain_cte.result b/tests/integrationtest/r/explain_cte.result
similarity index 100%
rename from cmd/explaintest/r/explain_cte.result
rename to tests/integrationtest/r/explain_cte.result
diff --git a/cmd/explaintest/r/explain_easy.result b/tests/integrationtest/r/explain_easy.result
similarity index 100%
rename from cmd/explaintest/r/explain_easy.result
rename to tests/integrationtest/r/explain_easy.result
diff --git a/cmd/explaintest/r/explain_easy_stats.result b/tests/integrationtest/r/explain_easy_stats.result
similarity index 100%
rename from cmd/explaintest/r/explain_easy_stats.result
rename to tests/integrationtest/r/explain_easy_stats.result
diff --git a/cmd/explaintest/r/explain_foreign_key.result b/tests/integrationtest/r/explain_foreign_key.result
similarity index 100%
rename from cmd/explaintest/r/explain_foreign_key.result
rename to tests/integrationtest/r/explain_foreign_key.result
diff --git a/cmd/explaintest/r/explain_generate_column_substitute.result b/tests/integrationtest/r/explain_generate_column_substitute.result
similarity index 100%
rename from cmd/explaintest/r/explain_generate_column_substitute.result
rename to tests/integrationtest/r/explain_generate_column_substitute.result
diff --git a/cmd/explaintest/r/explain_indexmerge_stats.result b/tests/integrationtest/r/explain_indexmerge_stats.result
similarity index 100%
rename from cmd/explaintest/r/explain_indexmerge_stats.result
rename to tests/integrationtest/r/explain_indexmerge_stats.result
diff --git a/cmd/explaintest/r/explain_join_stats.result b/tests/integrationtest/r/explain_join_stats.result
similarity index 100%
rename from cmd/explaintest/r/explain_join_stats.result
rename to tests/integrationtest/r/explain_join_stats.result
diff --git a/cmd/explaintest/r/explain_shard_index.result b/tests/integrationtest/r/explain_shard_index.result
similarity index 100%
rename from cmd/explaintest/r/explain_shard_index.result
rename to tests/integrationtest/r/explain_shard_index.result
diff --git a/cmd/explaintest/r/explain_stats.result b/tests/integrationtest/r/explain_stats.result
similarity index 100%
rename from cmd/explaintest/r/explain_stats.result
rename to tests/integrationtest/r/explain_stats.result
diff --git a/cmd/explaintest/r/explain_union_scan.result b/tests/integrationtest/r/explain_union_scan.result
similarity index 100%
rename from cmd/explaintest/r/explain_union_scan.result
rename to tests/integrationtest/r/explain_union_scan.result
diff --git a/cmd/explaintest/r/expression/issues.result b/tests/integrationtest/r/expression/issues.result
similarity index 100%
rename from cmd/explaintest/r/expression/issues.result
rename to tests/integrationtest/r/expression/issues.result
diff --git a/cmd/explaintest/r/generated_columns.result b/tests/integrationtest/r/generated_columns.result
similarity index 100%
rename from cmd/explaintest/r/generated_columns.result
rename to tests/integrationtest/r/generated_columns.result
diff --git a/cmd/explaintest/r/imdbload.result b/tests/integrationtest/r/imdbload.result
similarity index 100%
rename from cmd/explaintest/r/imdbload.result
rename to tests/integrationtest/r/imdbload.result
diff --git a/cmd/explaintest/r/index_join.result b/tests/integrationtest/r/index_join.result
similarity index 100%
rename from cmd/explaintest/r/index_join.result
rename to tests/integrationtest/r/index_join.result
diff --git a/cmd/explaintest/r/index_merge.result b/tests/integrationtest/r/index_merge.result
similarity index 100%
rename from cmd/explaintest/r/index_merge.result
rename to tests/integrationtest/r/index_merge.result
diff --git a/cmd/explaintest/r/naaj.result b/tests/integrationtest/r/naaj.result
similarity index 100%
rename from cmd/explaintest/r/naaj.result
rename to tests/integrationtest/r/naaj.result
diff --git a/cmd/explaintest/r/new_character_set.result b/tests/integrationtest/r/new_character_set.result
similarity index 100%
rename from cmd/explaintest/r/new_character_set.result
rename to tests/integrationtest/r/new_character_set.result
diff --git a/cmd/explaintest/r/new_character_set_builtin.result b/tests/integrationtest/r/new_character_set_builtin.result
similarity index 100%
rename from cmd/explaintest/r/new_character_set_builtin.result
rename to tests/integrationtest/r/new_character_set_builtin.result
diff --git a/cmd/explaintest/r/new_character_set_invalid.result b/tests/integrationtest/r/new_character_set_invalid.result
similarity index 100%
rename from cmd/explaintest/r/new_character_set_invalid.result
rename to tests/integrationtest/r/new_character_set_invalid.result
diff --git a/cmd/explaintest/r/select.result b/tests/integrationtest/r/select.result
similarity index 100%
rename from cmd/explaintest/r/select.result
rename to tests/integrationtest/r/select.result
diff --git a/cmd/explaintest/r/show.result b/tests/integrationtest/r/show.result
similarity index 100%
rename from cmd/explaintest/r/show.result
rename to tests/integrationtest/r/show.result
diff --git a/cmd/explaintest/r/subquery.result b/tests/integrationtest/r/subquery.result
similarity index 100%
rename from cmd/explaintest/r/subquery.result
rename to tests/integrationtest/r/subquery.result
diff --git a/cmd/explaintest/r/topn_push_down.result b/tests/integrationtest/r/topn_push_down.result
similarity index 100%
rename from cmd/explaintest/r/topn_push_down.result
rename to tests/integrationtest/r/topn_push_down.result
diff --git a/cmd/explaintest/r/topn_pushdown.result b/tests/integrationtest/r/topn_pushdown.result
similarity index 100%
rename from cmd/explaintest/r/topn_pushdown.result
rename to tests/integrationtest/r/topn_pushdown.result
diff --git a/cmd/explaintest/r/tpch.result b/tests/integrationtest/r/tpch.result
similarity index 100%
rename from cmd/explaintest/r/tpch.result
rename to tests/integrationtest/r/tpch.result
diff --git a/cmd/explaintest/r/types/const.result b/tests/integrationtest/r/types/const.result
similarity index 100%
rename from cmd/explaintest/r/types/const.result
rename to tests/integrationtest/r/types/const.result
diff --git a/cmd/explaintest/r/vitess_hash.result b/tests/integrationtest/r/vitess_hash.result
similarity index 100%
rename from cmd/explaintest/r/vitess_hash.result
rename to tests/integrationtest/r/vitess_hash.result
diff --git a/cmd/explaintest/r/window_function.result b/tests/integrationtest/r/window_function.result
similarity index 100%
rename from cmd/explaintest/r/window_function.result
rename to tests/integrationtest/r/window_function.result
diff --git a/cmd/explaintest/run-tests.sh b/tests/integrationtest/run-tests.sh
similarity index 95%
rename from cmd/explaintest/run-tests.sh
rename to tests/integrationtest/run-tests.sh
index 863f62b67b065..d4533b201419c 100755
--- a/cmd/explaintest/run-tests.sh
+++ b/tests/integrationtest/run-tests.sh
@@ -20,7 +20,7 @@ build=1
 mysql_tester="./mysql_tester"
 tidb_server=""
 portgenerator=""
-mysql_tester_log="./explain-test.out"
+mysql_tester_log="./integration-test.out"
 tests=""
 record=0
 record_case=""
@@ -41,10 +41,10 @@ function help_message()
     -d <y|Y|n|N|b|B>: \"y\" or \"Y\" for only enabling the new collation during test.
                       \"n\" or \"N\" for only disabling the new collation during test.
                       \"b\" or \"B\" for both tests [default].
-                      Enable/Disable the new collation during the explain test.
+                      Enable/Disable the new collation during the integration test.
 
     -s <tidb-server-path>: Use tidb-server in <tidb-server-path> for testing.
-                           eg. \"./run-tests.sh -s ./explaintest_tidb-server\"
+                           eg. \"./run-tests.sh -s ./integrationtest_tidb-server\"
 
     -b <y|Y|n|N>: \"y\" or \"Y\" for building test binaries [default \"y\" if this option is not specified].
                   \"n\" or \"N\" for not to build.
@@ -74,7 +74,7 @@ function build_portgenerator()
 
 function build_tidb_server()
 {
-    tidb_server="./explaintest_tidb-server"
+    tidb_server="./integrationtest_tidb-server"
     echo "building tidb-server binary: $tidb_server"
     rm -rf $tidb_server
     if [ "${TIDB_TEST_STORE_NAME}" = "tikv" ]; then
@@ -169,7 +169,7 @@ if [ $build -eq 1 ]; then
     build_mysql_tester
 else
     if [ -z "$tidb_server" ]; then
-        tidb_server="./explaintest_tidb-server"
+        tidb_server="./integrationtest_tidb-server"
         if [[ ! -f "$tidb_server" ]]; then
             build_tidb_server
         else
@@ -239,9 +239,9 @@ function run_mysql_tester()
       fi
     else
       if [ -z "$tests" ]; then
-          echo "run all explain test cases ($coll_msg)"
+          echo "run all integration test cases ($coll_msg)"
       else
-          echo "run explain test cases($coll_msg): $tests"
+          echo "run integration test cases($coll_msg): $tests"
       fi
       $mysql_tester -port "$port" --collation-disable=$coll_disabled $tests
     fi
@@ -285,4 +285,4 @@ if [[ $collation_opt = 1 || $collation_opt = 2 ]]; then
     check_data_race
 fi
 
-echo "explaintest passed!"
+echo "integrationtest passed!"
diff --git a/cmd/explaintest/s.zip b/tests/integrationtest/s.zip
similarity index 100%
rename from cmd/explaintest/s.zip
rename to tests/integrationtest/s.zip
diff --git a/cmd/explaintest/t/access_path_selection.test b/tests/integrationtest/t/access_path_selection.test
similarity index 100%
rename from cmd/explaintest/t/access_path_selection.test
rename to tests/integrationtest/t/access_path_selection.test
diff --git a/cmd/explaintest/t/agg_predicate_pushdown.test b/tests/integrationtest/t/agg_predicate_pushdown.test
similarity index 100%
rename from cmd/explaintest/t/agg_predicate_pushdown.test
rename to tests/integrationtest/t/agg_predicate_pushdown.test
diff --git a/cmd/explaintest/t/black_list.test b/tests/integrationtest/t/black_list.test
similarity index 100%
rename from cmd/explaintest/t/black_list.test
rename to tests/integrationtest/t/black_list.test
diff --git a/cmd/explaintest/t/clustered_index.test b/tests/integrationtest/t/clustered_index.test
similarity index 100%
rename from cmd/explaintest/t/clustered_index.test
rename to tests/integrationtest/t/clustered_index.test
diff --git a/cmd/explaintest/t/collation_agg_func.test b/tests/integrationtest/t/collation_agg_func.test
similarity index 100%
rename from cmd/explaintest/t/collation_agg_func.test
rename to tests/integrationtest/t/collation_agg_func.test
diff --git a/cmd/explaintest/t/collation_check_use_collation.test b/tests/integrationtest/t/collation_check_use_collation.test
similarity index 100%
rename from cmd/explaintest/t/collation_check_use_collation.test
rename to tests/integrationtest/t/collation_check_use_collation.test
diff --git a/cmd/explaintest/t/collation_misc.test b/tests/integrationtest/t/collation_misc.test
similarity index 100%
rename from cmd/explaintest/t/collation_misc.test
rename to tests/integrationtest/t/collation_misc.test
diff --git a/cmd/explaintest/t/collation_pointget.test b/tests/integrationtest/t/collation_pointget.test
similarity index 100%
rename from cmd/explaintest/t/collation_pointget.test
rename to tests/integrationtest/t/collation_pointget.test
diff --git a/cmd/explaintest/t/common_collation.test b/tests/integrationtest/t/common_collation.test
similarity index 100%
rename from cmd/explaintest/t/common_collation.test
rename to tests/integrationtest/t/common_collation.test
diff --git a/cmd/explaintest/t/cte.test b/tests/integrationtest/t/cte.test
similarity index 100%
rename from cmd/explaintest/t/cte.test
rename to tests/integrationtest/t/cte.test
diff --git a/cmd/explaintest/t/explain-non-select-stmt.test b/tests/integrationtest/t/explain-non-select-stmt.test
similarity index 100%
rename from cmd/explaintest/t/explain-non-select-stmt.test
rename to tests/integrationtest/t/explain-non-select-stmt.test
diff --git a/cmd/explaintest/t/explain.test b/tests/integrationtest/t/explain.test
similarity index 100%
rename from cmd/explaintest/t/explain.test
rename to tests/integrationtest/t/explain.test
diff --git a/cmd/explaintest/t/explain_complex.test b/tests/integrationtest/t/explain_complex.test
similarity index 100%
rename from cmd/explaintest/t/explain_complex.test
rename to tests/integrationtest/t/explain_complex.test
diff --git a/cmd/explaintest/t/explain_complex_stats.test b/tests/integrationtest/t/explain_complex_stats.test
similarity index 100%
rename from cmd/explaintest/t/explain_complex_stats.test
rename to tests/integrationtest/t/explain_complex_stats.test
diff --git a/cmd/explaintest/t/explain_cte.test b/tests/integrationtest/t/explain_cte.test
similarity index 100%
rename from cmd/explaintest/t/explain_cte.test
rename to tests/integrationtest/t/explain_cte.test
diff --git a/cmd/explaintest/t/explain_easy.test b/tests/integrationtest/t/explain_easy.test
similarity index 100%
rename from cmd/explaintest/t/explain_easy.test
rename to tests/integrationtest/t/explain_easy.test
diff --git a/cmd/explaintest/t/explain_easy_stats.test b/tests/integrationtest/t/explain_easy_stats.test
similarity index 100%
rename from cmd/explaintest/t/explain_easy_stats.test
rename to tests/integrationtest/t/explain_easy_stats.test
diff --git a/cmd/explaintest/t/explain_foreign_key.test b/tests/integrationtest/t/explain_foreign_key.test
similarity index 100%
rename from cmd/explaintest/t/explain_foreign_key.test
rename to tests/integrationtest/t/explain_foreign_key.test
diff --git a/cmd/explaintest/t/explain_generate_column_substitute.test b/tests/integrationtest/t/explain_generate_column_substitute.test
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