diff --git a/.golangci.yml b/.golangci.yml
index 441db5ee5..99d8b2ce6 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -31,6 +31,7 @@ linters:
     - varcheck
     - whitespace
     - wastedassign
+    - unconvert
 
   # don't enable:
   # - asciicheck
diff --git a/api/metadata/server.go b/api/metadata/server.go
index 39e468ec5..3600fc14e 100644
--- a/api/metadata/server.go
+++ b/api/metadata/server.go
@@ -14,7 +14,7 @@ import (
 	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/proto"
 	"google.golang.org/protobuf/reflect/protodesc"
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoreflect"
 	"google.golang.org/protobuf/reflect/protoregistry"
 	dpb "google.golang.org/protobuf/types/descriptorpb"
 
diff --git a/config/file/file_test.go b/config/file/file_test.go
index d3c55ad39..0eb2b24fc 100644
--- a/config/file/file_test.go
+++ b/config/file/file_test.go
@@ -208,7 +208,7 @@ func TestConfig(t *testing.T) {
 func testConfig(t *testing.T, c config.Config) {
 	expected := map[string]interface{}{
 		"test.settings.int_key":      int64(1000),
-		"test.settings.float_key":    float64(1000.1),
+		"test.settings.float_key":    1000.1,
 		"test.settings.string_key":   "string_value",
 		"test.settings.duration_key": time.Duration(10000),
 		"test.server.addr":           "127.0.0.1",
diff --git a/config/value_test.go b/config/value_test.go
index 9f6745380..68558bf81 100644
--- a/config/value_test.go
+++ b/config/value_test.go
@@ -70,7 +70,7 @@ func Test_atomicValue_Int(t *testing.T) {
 }
 
 func Test_atomicValue_Float(t *testing.T) {
-	vlist := []interface{}{"123123.1", float64(123123.1)}
+	vlist := []interface{}{"123123.1", 123123.1}
 	for _, x := range vlist {
 		v := atomicValue{}
 		v.Store(x)
@@ -78,7 +78,7 @@ func Test_atomicValue_Float(t *testing.T) {
 		if err != nil {
 			t.Fatal(`err is not nil`)
 		}
-		if b != float64(123123.1) {
+		if b != 123123.1 {
 			t.Fatal(`b is not equal to 123123.1`)
 		}
 	}
diff --git a/contrib/config/consul/config.go b/contrib/config/consul/config.go
index dca8a88e7..0404801bc 100644
--- a/contrib/config/consul/config.go
+++ b/contrib/config/consul/config.go
@@ -28,9 +28,9 @@ func WithContext(ctx context.Context) Option {
 
 // WithPath is config path
 func WithPath(p string) Option {
-	return Option(func(o *options) {
+	return func(o *options) {
 		o.path = p
-	})
+	}
 }
 
 type source struct {
diff --git a/contrib/log/aliyun/aliyun.go b/contrib/log/aliyun/aliyun.go
index 83219fc12..351de69d9 100644
--- a/contrib/log/aliyun/aliyun.go
+++ b/contrib/log/aliyun/aliyun.go
@@ -10,7 +10,7 @@ import (
 	"github.com/aliyun/aliyun-log-go-sdk/producer"
 	"google.golang.org/protobuf/proto"
 
-	log "github.com/go-kratos/kratos/v2/log"
+	"github.com/go-kratos/kratos/v2/log"
 )
 
 // Logger see more detail https://github.com/aliyun/aliyun-log-go-sdk
diff --git a/contrib/log/tencent/tencent.go b/contrib/log/tencent/tencent.go
index 5e0719d2c..8becf7883 100644
--- a/contrib/log/tencent/tencent.go
+++ b/contrib/log/tencent/tencent.go
@@ -9,7 +9,7 @@ import (
 	cls "github.com/tencentcloud/tencentcloud-cls-sdk-go"
 	"google.golang.org/protobuf/proto"
 
-	log "github.com/go-kratos/kratos/v2/log"
+	"github.com/go-kratos/kratos/v2/log"
 )
 
 type Logger interface {
diff --git a/encoding/form/proto_encode.go b/encoding/form/proto_encode.go
index 28ebb0bc1..94eac6ab8 100644
--- a/encoding/form/proto_encode.go
+++ b/encoding/form/proto_encode.go
@@ -162,7 +162,7 @@ func encodeMessage(msgDescriptor protoreflect.MessageDescriptor, value protorefl
 	case "google.protobuf.DoubleValue", "google.protobuf.FloatValue", "google.protobuf.Int64Value", "google.protobuf.Int32Value",
 		"google.protobuf.UInt64Value", "google.protobuf.UInt32Value", "google.protobuf.BoolValue", "google.protobuf.StringValue":
 		fd := msgDescriptor.Fields()
-		v := value.Message().Get(fd.ByName(protoreflect.Name("value")))
+		v := value.Message().Get(fd.ByName("value"))
 		return fmt.Sprint(v.Interface()), nil
 	case fieldMaskFullName:
 		m, ok := value.Message().Interface().(*fieldmaskpb.FieldMask)
diff --git a/encoding/xml/xml_test.go b/encoding/xml/xml_test.go
index 6c53c3dd0..09e7d03b9 100644
--- a/encoding/xml/xml_test.go
+++ b/encoding/xml/xml_test.go
@@ -25,7 +25,7 @@ func TestCodec_Marshal(t *testing.T) {
 		// Test value types
 		{Value: &Plain{true}, ExpectXML: `<Plain><V>true</V></Plain>`},
 		{Value: &Plain{false}, ExpectXML: `<Plain><V>false</V></Plain>`},
-		{Value: &Plain{int(42)}, ExpectXML: `<Plain><V>42</V></Plain>`},
+		{Value: &Plain{42}, ExpectXML: `<Plain><V>42</V></Plain>`},
 		{
 			Value: &NestedOrder{Field1: "C", Field2: "B", Field3: "A"},
 			ExpectXML: `<result>` +