diff --git a/client/orm/migration/ddl.go b/client/orm/migration/ddl.go
index ab452b49..bcbfdd5a 100644
--- a/client/orm/migration/ddl.go
+++ b/client/orm/migration/ddl.go
@@ -274,7 +274,7 @@ func (m *Migration) GetSQL() (sql string) {
 			}
 
 			if len(m.Primary) > 0 {
-				sql += fmt.Sprintf(",\n PRIMARY KEY( ")
+				sql += ",\n PRIMARY KEY( "
 			}
 			for index, column := range m.Primary {
 				sql += fmt.Sprintf(" `%s`", column.Name)
@@ -284,7 +284,7 @@ func (m *Migration) GetSQL() (sql string) {
 
 			}
 			if len(m.Primary) > 0 {
-				sql += fmt.Sprintf(")")
+				sql += ")"
 			}
 
 			for _, unique := range m.Uniques {
@@ -295,7 +295,7 @@ func (m *Migration) GetSQL() (sql string) {
 						sql += ","
 					}
 				}
-				sql += fmt.Sprintf(")")
+				sql += ")"
 			}
 			for _, foreign := range m.Foreigns {
 				sql += fmt.Sprintf(",\n `%s` %s %s %s %s %s", foreign.Name, foreign.DataType, foreign.Unsign, foreign.Null, foreign.Inc, foreign.Default)
@@ -356,7 +356,7 @@ func (m *Migration) GetSQL() (sql string) {
 			}
 
 			if len(m.Primary) > 0 {
-				sql += fmt.Sprintf("\n DROP PRIMARY KEY,")
+				sql += "\n DROP PRIMARY KEY,"
 			}
 
 			for index, unique := range m.Uniques {
diff --git a/core/config/json/json.go b/core/config/json/json.go
index 098f0308..36ab6a75 100644
--- a/core/config/json/json.go
+++ b/core/config/json/json.go
@@ -99,12 +99,12 @@ func (c *JSONConfigContainer) sub(key string) (map[string]interface{}, error) {
 	}
 	value, ok := c.data[key]
 	if !ok {
-		return nil, errors.New(fmt.Sprintf("key is not found: %s", key))
+		return nil, fmt.Errorf("key is not found: %s", key)
 	}
 
 	res, ok := value.(map[string]interface{})
 	if !ok {
-		return nil, errors.New(fmt.Sprintf("the type of value is invalid, key: %s", key))
+		return nil, fmt.Errorf("the type of value is invalid, key: %s", key)
 	}
 	return res, nil
 }
diff --git a/core/config/xml/xml.go b/core/config/xml/xml.go
index 1d7494b4..cd9d4e00 100644
--- a/core/config/xml/xml.go
+++ b/core/config/xml/xml.go
@@ -120,11 +120,11 @@ func (c *ConfigContainer) sub(key string) (map[string]interface{}, error) {
 	}
 	value, ok := c.data[key]
 	if !ok {
-		return nil, errors.New(fmt.Sprintf("the key is not found: %s", key))
+		return nil, fmt.Errorf("the key is not found: %s", key)
 	}
 	res, ok := value.(map[string]interface{})
 	if !ok {
-		return nil, errors.New(fmt.Sprintf("the value of this key is not a structure: %s", key))
+		return nil, fmt.Errorf("the value of this key is not a structure: %s", key)
 	}
 	return res, nil
 }
diff --git a/core/logs/alils/log_project.go b/core/logs/alils/log_project.go
index f993003e..63200ece 100755
--- a/core/logs/alils/log_project.go
+++ b/core/logs/alils/log_project.go
@@ -45,7 +45,7 @@ func (p *LogProject) ListLogStore() (storeNames []string, err error) {
 		"x-sls-bodyrawsize": "0",
 	}
 
-	uri := fmt.Sprintf("/logstores")
+	uri := "/logstores"
 	r, err := request(p, "GET", uri, h, nil)
 	if err != nil {
 		return
diff --git a/core/logs/es/es.go b/core/logs/es/es.go
index a07ee83c..d1ba452d 100644
--- a/core/logs/es/es.go
+++ b/core/logs/es/es.go
@@ -81,7 +81,7 @@ func (el *esLogger) Init(config string) error {
 	if len(el.Formatter) > 0 {
 		fmtr, ok := logs.GetFormatter(el.Formatter)
 		if !ok {
-			return errors.New(fmt.Sprintf("the formatter with name: %s not found", el.Formatter))
+			return fmt.Errorf("the formatter with name: %s not found", el.Formatter)
 		}
 		el.formatter = fmtr
 	}
diff --git a/core/utils/mail.go b/core/utils/mail.go
index e685c449..0f1f95cc 100644
--- a/core/utils/mail.go
+++ b/core/utils/mail.go
@@ -120,7 +120,7 @@ func (e *Email) Bytes() ([]byte, error) {
 		}
 		// Create the body sections
 		if e.Text != "" {
-			header.Set("Content-Type", fmt.Sprintf("text/plain; charset=UTF-8"))
+			header.Set("Content-Type", "text/plain; charset=UTF-8")
 			header.Set("Content-Transfer-Encoding", "quoted-printable")
 			if _, err := subWriter.CreatePart(header); err != nil {
 				return nil, err
@@ -131,7 +131,7 @@ func (e *Email) Bytes() ([]byte, error) {
 			}
 		}
 		if e.HTML != "" {
-			header.Set("Content-Type", fmt.Sprintf("text/html; charset=UTF-8"))
+			header.Set("Content-Type", "text/html; charset=UTF-8")
 			header.Set("Content-Transfer-Encoding", "quoted-printable")
 			if _, err := subWriter.CreatePart(header); err != nil {
 				return nil, err
diff --git a/server/web/config.go b/server/web/config.go
index 006201a6..b164f0df 100644
--- a/server/web/config.go
+++ b/server/web/config.go
@@ -505,7 +505,7 @@ func defaultRecoverPanic(ctx *context.Context, cfg *Config) {
 				break
 			}
 			logs.Critical(fmt.Sprintf("%s:%d", file, line))
-			stack = stack + fmt.Sprintln(fmt.Sprintf("%s:%d", file, line))
+			stack += fmt.Sprintf("%s:%d\n", file, line)
 		}
 
 		if ctx.Output.Status != 0 {
@@ -629,7 +629,7 @@ func assignConfig(ac config.Configer) error {
 	for adaptor, cfg := range BConfig.Log.Outputs {
 		err := logs.SetLogger(adaptor, cfg)
 		if err != nil {
-			fmt.Fprintln(os.Stderr, fmt.Sprintf("%s with the config %q got err:%s", adaptor, cfg, err.Error()))
+			fmt.Fprintf(os.Stderr, "%s with the config %q got err:%s\n", adaptor, cfg, err.Error())
 			return err
 		}
 	}
diff --git a/task/task_test.go b/task/task_test.go
index 1fdfd4b9..98a3a059 100644
--- a/task/task_test.go
+++ b/task/task_test.go
@@ -147,7 +147,7 @@ func TestTask_Run(t *testing.T) {
 	task := func(ctx context.Context) error {
 		cnt++
 		fmt.Printf("Hello, world! %d \n", cnt)
-		return errors.New(fmt.Sprintf("Hello, world! %d", cnt))
+		return fmt.Errorf("Hello, world! %d", cnt)
 	}
 	tk := NewTask("taska", "0/30 * * * * *", task)
 	for i := 0; i < 200; i++ {