diff --git a/os/gcfg/gcfg.go b/os/gcfg/gcfg.go
index 19b624795..74cad55d0 100644
--- a/os/gcfg/gcfg.go
+++ b/os/gcfg/gcfg.go
@@ -11,7 +11,6 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/gogf/gf/v2/container/gmap"
 	"github.com/gogf/gf/v2/container/gvar"
 	"github.com/gogf/gf/v2/errors/gcode"
 	"github.com/gogf/gf/v2/errors/gerror"
@@ -24,7 +23,6 @@ import (
 // Config is the configuration management object.
 type Config struct {
 	adapter Adapter
-	dataMap *gmap.StrAnyMap
 }
 
 const (
@@ -39,7 +37,6 @@ func New() (*Config, error) {
 	}
 	return &Config{
 		adapter: adapterFile,
-		dataMap: gmap.NewStrAnyMap(true),
 	}, nil
 }
 
@@ -47,7 +44,6 @@ func New() (*Config, error) {
 func NewWithAdapter(adapter Adapter) *Config {
 	return &Config{
 		adapter: adapter,
-		dataMap: gmap.NewStrAnyMap(true),
 	}
 }
 
@@ -103,13 +99,6 @@ func (c *Config) Available(ctx context.Context, resource ...string) (ok bool) {
 	return c.adapter.Available(ctx, resource...)
 }
 
-// Set sets value with specified `pattern`.
-// It supports hierarchical data access by char separator, which is '.' in default.
-// It is commonly used for updates certain configuration value in runtime.
-func (c *Config) Set(ctx context.Context, pattern string, value interface{}) {
-	c.dataMap.Set(pattern, value)
-}
-
 // Get retrieves and returns value by specified `pattern`.
 // It returns all values of current Json object if `pattern` is given empty or string ".".
 // It returns nil if no value found by `pattern`.
@@ -120,17 +109,15 @@ func (c *Config) Get(ctx context.Context, pattern string, def ...interface{}) (*
 		err   error
 		value interface{}
 	)
-	if value = c.dataMap.Get(pattern); value == nil {
-		value, err = c.adapter.Get(ctx, pattern)
-		if err != nil {
-			return nil, err
-		}
-		if value == nil {
-			if len(def) > 0 {
-				return gvar.New(def[0]), nil
-			}
-			return nil, nil
+	value, err = c.adapter.Get(ctx, pattern)
+	if err != nil {
+		return nil, err
+	}
+	if value == nil {
+		if len(def) > 0 {
+			return gvar.New(def[0]), nil
 		}
+		return nil, nil
 	}
 	return gvar.New(value), nil
 }
@@ -181,19 +168,7 @@ func (c *Config) GetWithCmd(ctx context.Context, pattern string, def ...interfac
 
 // Data retrieves and returns all configuration data as map type.
 func (c *Config) Data(ctx context.Context) (data map[string]interface{}, err error) {
-	adapterData, err := c.adapter.Data(ctx)
-	if err != nil {
-		return nil, err
-	}
-	data = make(map[string]interface{})
-	for k, v := range adapterData {
-		data[k] = v
-	}
-	c.dataMap.Iterator(func(k string, v interface{}) bool {
-		data[k] = v
-		return true
-	})
-	return
+	return c.adapter.Data(ctx)
 }
 
 // MustGet acts as function Get, but it panics if error occurs.
diff --git a/os/gcfg/gcfg_z_unit_basic_test.go b/os/gcfg/gcfg_z_unit_basic_test.go
index 0400c93fb..c9c11d24f 100644
--- a/os/gcfg/gcfg_z_unit_basic_test.go
+++ b/os/gcfg/gcfg_z_unit_basic_test.go
@@ -146,25 +146,6 @@ func Test_SetFileName(t *testing.T) {
 	})
 }
 
-func TestCfg_Set(t *testing.T) {
-	config := `log-path = "logs"`
-	gtest.C(t, func(t *gtest.T) {
-		path := gcfg.DefaultConfigFile
-		err := gfile.PutContents(path, config)
-		t.Assert(err, nil)
-		defer gfile.Remove(path)
-
-		adapterFile, err := gcfg.NewAdapterFile()
-		t.AssertNil(err)
-		t.Assert(adapterFile.MustGet(ctx, "log-path"), "logs")
-
-		c := gcfg.NewWithAdapter(adapterFile)
-		c.Set(ctx, "log-path", "custom-logs")
-		t.Assert(err, nil)
-		t.Assert(c.MustGet(ctx, "log-path"), "custom-logs")
-	})
-}
-
 func TestCfg_Get_WrongConfigFile(t *testing.T) {
 	gtest.C(t, func(t *gtest.T) {
 		var err error