diff --git a/g/encoding/gbinary/gbinary_test.go b/g/encoding/gbinary/gbinary_test.go
new file mode 100644
index 000000000..2cb64a848
--- /dev/null
+++ b/g/encoding/gbinary/gbinary_test.go
@@ -0,0 +1,135 @@
+// Copyright 2017 gf Author(https://github.com/gogf/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://github.com/gogf/gf.
+
+package gbinary_test
+
+import (
+	"github.com/gogf/gf/g/encoding/gbinary"
+	"github.com/gogf/gf/g/test/gtest"
+	"math"
+	"testing"
+)
+
+var testData = map[string]interface{}{
+	"nil":         nil,
+	"int":         int(123),
+	"int8":        int8(-99),
+	"int8.max":    math.MaxInt8,
+	"int16":       int16(123),
+	"int16.max":   math.MaxInt16,
+	"int32":       int32(-199),
+	"int32.max":   math.MaxInt32,
+	"int64":       int64(123),
+	"int64.max":   math.MaxInt64,
+	"uint":        uint(123),
+	"uint8":       uint8(123),
+	"uint8.max":   math.MaxUint8,
+	"uint16":      uint16(9999),
+	"uint16.max":  math.MaxUint16,
+	"uint32":      uint32(123),
+	"uint32.max":  math.MaxUint32,
+	"uint64":      uint64(123),
+	"uint64.max":  math.MaxUint32 + 1,
+	"bool.true":   true,
+	"bool.false":  false,
+	"string":      "hehe haha",
+	"byte":        []byte("hehe haha"),
+	"float32":     float32(123.456),
+	"float32.max": math.MaxFloat32,
+	"float64":     float64(123.456),
+	"float64.max": math.MaxFloat64,
+}
+
+func TestEncodeAndDecode(t *testing.T) {
+	for k, v := range testData {
+		ve := gbinary.Encode(v)
+		ve1 := gbinary.EncodeByLength(len(ve), v)
+
+		//t.Logf("%s:%v, encoded:%v\n", k, v, ve)
+		switch v.(type) {
+		case int:
+			gtest.Assert(gbinary.DecodeToInt(ve), v)
+			gtest.Assert(gbinary.DecodeToInt(ve1), v)
+		case int8:
+			gtest.Assert(gbinary.DecodeToInt8(ve), v)
+			gtest.Assert(gbinary.DecodeToInt8(ve1), v)
+		case int16:
+			gtest.Assert(gbinary.DecodeToInt16(ve), v)
+			gtest.Assert(gbinary.DecodeToInt16(ve1), v)
+		case int32:
+			gtest.Assert(gbinary.DecodeToInt32(ve), v)
+			gtest.Assert(gbinary.DecodeToInt32(ve1), v)
+		case int64:
+			gtest.Assert(gbinary.DecodeToInt64(ve), v)
+			gtest.Assert(gbinary.DecodeToInt64(ve1), v)
+		case uint:
+			gtest.Assert(gbinary.DecodeToUint(ve), v)
+			gtest.Assert(gbinary.DecodeToUint(ve1), v)
+		case uint8:
+			gtest.Assert(gbinary.DecodeToUint8(ve), v)
+			gtest.Assert(gbinary.DecodeToUint8(ve1), v)
+		case uint16:
+			gtest.Assert(gbinary.DecodeToUint16(ve1), v)
+			gtest.Assert(gbinary.DecodeToUint16(ve), v)
+		case uint32:
+			gtest.Assert(gbinary.DecodeToUint32(ve1), v)
+			gtest.Assert(gbinary.DecodeToUint32(ve), v)
+		case uint64:
+			gtest.Assert(gbinary.DecodeToUint64(ve), v)
+			gtest.Assert(gbinary.DecodeToUint64(ve1), v)
+		case bool:
+			gtest.Assert(gbinary.DecodeToBool(ve), v)
+			gtest.Assert(gbinary.DecodeToBool(ve1), v)
+		case string:
+			gtest.Assert(gbinary.DecodeToString(ve), v)
+			gtest.Assert(gbinary.DecodeToString(ve1), v)
+		case float32:
+			gtest.Assert(gbinary.DecodeToFloat32(ve), v)
+			gtest.Assert(gbinary.DecodeToFloat32(ve1), v)
+		case float64:
+			gtest.Assert(gbinary.DecodeToFloat64(ve), v)
+			gtest.Assert(gbinary.DecodeToFloat64(ve1), v)
+		default:
+			if v == nil {
+				continue
+			}
+			res := make([]byte, len(ve))
+			err := gbinary.Decode(ve, res)
+			if err != nil {
+				t.Errorf("test data: %s, %v, error:%v", k, v, err)
+			}
+			gtest.Assert(res, v)
+		}
+	}
+}
+
+type User struct {
+	Name string
+	Age  int
+	Url  string
+}
+
+func TestEncodeStruct(t *testing.T) {
+	user := User{"wenzi1", 999, "www.baidu.com"}
+	ve := gbinary.Encode(user)
+	s := gbinary.DecodeToString(ve)
+	gtest.Assert(string(s), s)
+}
+
+var testBitData = []int{0, 99, 122, 129, 222, 999, 22322}
+
+func TestBits(t *testing.T) {
+	for i := range testBitData {
+		bits := make([]gbinary.Bit, 0)
+		res := gbinary.EncodeBits(bits, testBitData[i], 64)
+
+		gtest.Assert(gbinary.DecodeBits(res), testBitData[i])
+		gtest.Assert(gbinary.DecodeBitsToUint(res), uint(testBitData[i]))
+
+		gtest.Assert(gbinary.DecodeBytesToBits(gbinary.EncodeBitsToBytes(res)), res)
+	}
+
+}