diff --git a/g/util/gconv/gconv_test.go b/g/util/gconv/gconv_test.go
new file mode 100644
index 000000000..b740eb2ff
--- /dev/null
+++ b/g/util/gconv/gconv_test.go
@@ -0,0 +1,137 @@
+// Copyright 2017-2018 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://gitee.com/johng/gf.
+
+// go test *.go -bench=".*" -benchmem
+
+package gconv
+
+import (
+    "testing"
+)
+
+var value = 123456789
+
+func BenchmarkString(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        String(value)
+    }
+}
+
+func BenchmarkInt(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Int(value)
+    }
+}
+
+func BenchmarkInt8(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Int8(value)
+    }
+}
+
+func BenchmarkInt16(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Int16(value)
+    }
+}
+
+func BenchmarkInt32(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Int32(value)
+    }
+}
+
+func BenchmarkInt64(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Int(value)
+    }
+}
+
+func BenchmarkUint(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Uint(value)
+    }
+}
+
+func BenchmarkUint8(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Uint8(value)
+    }
+}
+
+func BenchmarkUint16(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Uint16(value)
+    }
+}
+
+func BenchmarkUint32(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Uint32(value)
+    }
+}
+
+func BenchmarkUint64(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Uint64(value)
+    }
+}
+
+func BenchmarkFloat32(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Float32(value)
+    }
+}
+
+func BenchmarkFloat64(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Float64(value)
+    }
+}
+
+
+func BenchmarkTime(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Time(value)
+    }
+}
+
+func BenchmarkTimeDuration(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        TimeDuration(value)
+    }
+}
+
+
+func BenchmarkBytes(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Bytes(value)
+    }
+}
+
+func BenchmarkStrings(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Strings(value)
+    }
+}
+
+func BenchmarkInts(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Ints(value)
+    }
+}
+
+func BenchmarkFloats(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Floats(value)
+    }
+}
+
+func BenchmarkInterfaces(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Interfaces(value)
+    }
+}
\ No newline at end of file