diff --git a/expression/integration_test.go b/expression/integration_test.go
index 44d0eaaef43a7..f3973d3c564fa 100644
--- a/expression/integration_test.go
+++ b/expression/integration_test.go
@@ -871,8 +871,8 @@ func (s *testIntegrationSuite) TestStringBuiltin(c *C) {
 	result.Check(testkit.Rows("'121' '0' '中文' <nil>"))
 
 	// for convert
-	result = tk.MustQuery(`select convert("123" using "866"), convert("123" using "binary"), convert("中文" using "binary"), convert("中文" using "utf8"), convert(cast("中文" as binary) using "utf8");`)
-	result.Check(testkit.Rows("123 123 中文 中文 中文"))
+	result = tk.MustQuery(`select convert("123" using "866"), convert("123" using "binary"), convert("中文" using "binary"), convert("中文" using "utf8"), convert("中文" using "utf8mb4"), convert(cast("中文" as binary) using "utf8");`)
+	result.Check(testkit.Rows("123 123 中文 中文 中文 中文"))
 
 	// for insert
 	result = tk.MustQuery(`select insert("中文", 1, 1, cast("aaa" as binary)), insert("ba", -1, 1, "aaa"), insert("ba", 1, 100, "aaa"), insert("ba", 100, 1, "aaa");`)
diff --git a/util/charset/encoding_table.go b/util/charset/encoding_table.go
index e488ccb346cff..37a5550b79425 100644
--- a/util/charset/encoding_table.go
+++ b/util/charset/encoding_table.go
@@ -42,6 +42,7 @@ var encodings = map[string]struct {
 	"unicode-1-1-utf-8":   {encoding.Nop, "utf-8"},
 	"utf-8":               {encoding.Nop, "utf-8"},
 	"utf8":                {encoding.Nop, "utf-8"},
+	"utf8mb4":             {encoding.Nop, "utf-8"},
 	"binary":              {encoding.Nop, "binary"},
 	"866":                 {charmap.CodePage866, "ibm866"},
 	"cp866":               {charmap.CodePage866, "ibm866"},