diff --git a/pkg/middlewares/authorization.go b/pkg/middlewares/authorization.go
index f24d6639..407c16ff 100644
--- a/pkg/middlewares/authorization.go
+++ b/pkg/middlewares/authorization.go
@@ -10,6 +10,7 @@ import (
 	"github.com/mayswind/lab/pkg/utils"
 )
 
+// JWTAuthorization verifies whether current request is valid by jwt token
 func JWTAuthorization(c *core.Context) {
 	claims, err := getTokenClaims(c)
 
@@ -34,6 +35,7 @@ func JWTAuthorization(c *core.Context) {
 	c.Next()
 }
 
+// JWTTwoFactorAuthorization verifies whether current request is valid by 2fa passcode
 func JWTTwoFactorAuthorization(c *core.Context) {
 	claims, err := getTokenClaims(c)
 
diff --git a/pkg/middlewares/recovery.go b/pkg/middlewares/recovery.go
index af091f88..38922fd0 100644
--- a/pkg/middlewares/recovery.go
+++ b/pkg/middlewares/recovery.go
@@ -19,6 +19,7 @@ var (
 	slash     = []byte("/")
 )
 
+// Recovery logs error message when error occurs
 func Recovery(c *core.Context) {
 	defer func() {
 		if err := recover(); err != nil {
diff --git a/pkg/middlewares/request_id.go b/pkg/middlewares/request_id.go
index 48253bb9..38ceedad 100644
--- a/pkg/middlewares/request_id.go
+++ b/pkg/middlewares/request_id.go
@@ -8,6 +8,7 @@ import (
 
 const requestIdHeader = "X-Request-ID"
 
+// RequestId generates a new request id and add it to context and response header
 func RequestId(config *settings.Config) core.MiddlewareHandlerFunc {
 	return func(c *core.Context) {
 		if requestid.Container.Current == nil {
diff --git a/pkg/middlewares/request_log.go b/pkg/middlewares/request_log.go
index 40654cb9..dd99719a 100644
--- a/pkg/middlewares/request_log.go
+++ b/pkg/middlewares/request_log.go
@@ -7,6 +7,7 @@ import (
 	"github.com/mayswind/lab/pkg/log"
 )
 
+// RequestLog logs the http request log
 func RequestLog(c *core.Context) {
 	start := time.Now()
 	path := c.Request.URL.Path
diff --git a/pkg/middlewares/server_settings_cookie.go b/pkg/middlewares/server_settings_cookie.go
index bf2c1ec7..43dc1534 100644
--- a/pkg/middlewares/server_settings_cookie.go
+++ b/pkg/middlewares/server_settings_cookie.go
@@ -10,6 +10,7 @@ import (
 
 const settingsCookieName = "ACP_SETTINGS"
 
+// ServerSettingsCookie adds server settings to cookies in response
 func ServerSettingsCookie(config *settings.Config) core.MiddlewareHandlerFunc {
 	return func(c *core.Context) {
 		settingsArr := []string{