diff --git a/pkg/session/BUILD.bazel b/pkg/session/BUILD.bazel
index d653018239d85..f174ec20699c8 100644
--- a/pkg/session/BUILD.bazel
+++ b/pkg/session/BUILD.bazel
@@ -12,7 +12,6 @@ go_library(
         "testutil.go",  #keep
         "tidb.go",
         "txn.go",
-        "txnmanager.go",
     ],
     importpath = "github.com/pingcap/tidb/pkg/session",
     visibility = ["//visibility:public"],
@@ -58,8 +57,6 @@ go_library(
         "//pkg/sessionctx/stmtctx",
         "//pkg/sessionctx/variable",
         "//pkg/sessiontxn",
-        "//pkg/sessiontxn/isolation",
-        "//pkg/sessiontxn/staleread",
         "//pkg/statistics/handle/usage",
         "//pkg/store/driver/error",
         "//pkg/store/driver/txn",
@@ -111,7 +108,6 @@ go_library(
         "@io_etcd_go_etcd_client_v3//concurrency",
         "@org_uber_go_atomic//:atomic",
         "@org_uber_go_zap//:zap",
-        "@org_uber_go_zap//zapcore",
     ],
 )
 
diff --git a/pkg/session/txnmanager/BUILD.bazel b/pkg/session/txnmanager/BUILD.bazel
new file mode 100644
index 0000000000000..3305d7ef91db4
--- /dev/null
+++ b/pkg/session/txnmanager/BUILD.bazel
@@ -0,0 +1,23 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "txnmanager",
+    srcs = ["txnmanager.go"],
+    importpath = "github.com/pingcap/tidb/pkg/session/txnmanager",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//pkg/infoschema",
+        "//pkg/kv",
+        "//pkg/parser",
+        "//pkg/parser/ast",
+        "//pkg/sessionctx",
+        "//pkg/sessiontxn",
+        "//pkg/sessiontxn/isolation",
+        "//pkg/sessiontxn/staleread",
+        "//pkg/util/logutil",
+        "@com_github_pingcap_errors//:errors",
+        "@com_github_pingcap_failpoint//:failpoint",
+        "@org_uber_go_zap//:zap",
+        "@org_uber_go_zap//zapcore",
+    ],
+)
diff --git a/pkg/session/txnmanager.go b/pkg/session/txnmanager/txnmanager.go
similarity index 99%
rename from pkg/session/txnmanager.go
rename to pkg/session/txnmanager/txnmanager.go
index 4caf790643e2e..ca0a996026518 100644
--- a/pkg/session/txnmanager.go
+++ b/pkg/session/txnmanager/txnmanager.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package session
+package txnmanager
 
 import (
 	"context"