diff --git a/t/plugin/limit-req3.t b/t/plugin/limit-req3.t
new file mode 100644
index 000000000000..684eb9d1b405
--- /dev/null
+++ b/t/plugin/limit-req3.t
@@ -0,0 +1,114 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+use t::APISIX 'no_plan';
+
+log_level('info');
+repeat_each(1);
+no_long_string();
+no_shuffle();
+no_root_location();
+
+add_block_preprocessor(sub {
+    my ($block) = @_;
+
+    if (!$block->request) {
+        $block->set_value("request", "GET /t");
+    }
+
+    if (!$block->error_log && !$block->no_error_log) {
+        $block->set_value("no_error_log", "[error]\n[alert]");
+    }
+});
+
+run_tests;
+
+__DATA__
+
+=== TEST 1: create route with limit-req plugin
+--- config
+    location /t {
+        content_by_lua_block {
+            local t = require("lib.test_admin").test
+            local code, body = t('/apisix/admin/routes/1',
+                 ngx.HTTP_PUT,
+                 [[{
+                    "plugins": {
+                        "limit-req": {
+                            "rate": 0.1,
+                            "burst": 0.1,
+                            "rejected_code": 503,
+                            "key": "$remote_addr",
+                            "key_type": "var_combination"
+                        }
+                    },
+                    "upstream": {
+                        "nodes": {
+                            "127.0.0.1:1980": 1
+                        },
+                        "type": "roundrobin"
+                    },
+                    "uri": "/hello",
+                    "host": "www.test.com"
+                }]]
+                )
+
+            if code >= 300 then
+                ngx.status = code
+            end
+            ngx.say(body)
+        }
+    }
+--- request
+GET /t
+--- response_body
+passed
+
+
+
+=== TEST 2: create ssl(sni: www.test.com)
+--- config
+location /t {
+    content_by_lua_block {
+        local core = require("apisix.core")
+        local t = require("lib.test_admin")
+        local ssl_cert = t.read_file("t/certs/apisix.crt")
+        local ssl_key =  t.read_file("t/certs/apisix.key")
+        local data = {cert = ssl_cert, key = ssl_key, sni = "www.test.com"}
+        local code, body = t.test('/apisix/admin/ssls/1',
+            ngx.HTTP_PUT,
+            core.json.encode(data),
+            [[{
+                "value": {
+                    "sni": "www.test.com"
+                },
+                "key": "/apisix/ssls/1"
+            }]]
+            )
+        ngx.status = code
+        ngx.say(body)
+    }
+}
+--- response_body
+passed
+
+
+
+=== TEST 3: use HTTP version 2 to request
+--- exec
+curl --http2 --parallel -k https://www.test.com:1994/hello https://www.test.com:1994/hello --resolve www.test.com:1994:127.0.0.1
+--- response_body_like
+503 Service Temporarily Unavailable.*.hello world