diff --git a/server/model/movie.go b/server/model/movie.go
index 58a51ee..e38d985 100644
--- a/server/model/movie.go
+++ b/server/model/movie.go
@@ -26,13 +26,13 @@ func (p *PushMovieReq) Decode(ctx *gin.Context) error {
 }
 
 func (p *PushMovieReq) Validate() error {
-	if len(p.Url) > 1024 {
+	if len(p.Url) > 8192 {
 		return ErrUrlTooLong
 	}
 
 	if p.Name == "" {
 		return ErrEmptyName
-	} else if len(p.Name) > 1024 {
+	} else if len(p.Name) > 512 {
 		return ErrNameTooLong
 	}
 
diff --git a/server/model/room.go b/server/model/room.go
index 6acdde3..d9c60a6 100644
--- a/server/model/room.go
+++ b/server/model/room.go
@@ -27,8 +27,9 @@ var (
 )
 
 var (
-	alphaNumReg        = regexp.MustCompile(`^[a-zA-Z0-9_\-]+$`)
-	alphaNumChineseReg = regexp.MustCompile(`^[\p{Han}a-zA-Z0-9_\-]+$`)
+	alnumReg         = regexp.MustCompile(`^[[:alnum:]]+$`)
+	alnumPrintReg    = regexp.MustCompile(`^[[:print:][:alnum:]]+$`)
+	alnumPrintHanReg = regexp.MustCompile(`^[[:print:][:alnum:]\p{Han}]+$`)
 )
 
 type FormatEmptyPasswordError string
@@ -52,14 +53,14 @@ func (c *CreateRoomReq) Validate() error {
 		return ErrEmptyRoomName
 	} else if len(c.RoomName) > 32 {
 		return ErrRoomNameTooLong
-	} else if !alphaNumChineseReg.MatchString(c.RoomName) {
+	} else if !alnumPrintHanReg.MatchString(c.RoomName) {
 		return ErrRoomNameHasInvalidChar
 	}
 
 	if c.Password != "" {
 		if len(c.Password) > 32 {
 			return ErrPasswordTooLong
-		} else if !alphaNumReg.MatchString(c.Password) {
+		} else if !alnumPrintReg.MatchString(c.Password) {
 			return ErrPasswordHasInvalidChar
 		}
 	} else if conf.Conf.Room.MustPassword {
@@ -106,7 +107,7 @@ func (s *SetRoomPasswordReq) Decode(ctx *gin.Context) error {
 func (s *SetRoomPasswordReq) Validate() error {
 	if len(s.Password) > 32 {
 		return ErrPasswordTooLong
-	} else if !alphaNumReg.MatchString(s.Password) {
+	} else if !alnumPrintReg.MatchString(s.Password) {
 		return ErrPasswordHasInvalidChar
 	}
 	return nil
diff --git a/server/model/user.go b/server/model/user.go
index df99cdb..7c5bff8 100644
--- a/server/model/user.go
+++ b/server/model/user.go
@@ -20,7 +20,7 @@ func (s *SetUserPasswordReq) Validate() error {
 		return FormatEmptyPasswordError("user")
 	} else if len(s.Password) > 32 {
 		return ErrPasswordTooLong
-	} else if !alphaNumReg.MatchString(s.Password) {
+	} else if !alnumPrintReg.MatchString(s.Password) {
 		return ErrPasswordHasInvalidChar
 	}
 	return nil
@@ -64,7 +64,7 @@ func (s *SignupUserReq) Validate() error {
 		return errors.New("username is empty")
 	} else if len(s.Username) > 32 {
 		return ErrUsernameTooLong
-	} else if !alphaNumChineseReg.MatchString(s.Username) {
+	} else if !alnumPrintHanReg.MatchString(s.Username) {
 		return ErrUsernameHasInvalidChar
 	}
 
@@ -72,7 +72,7 @@ func (s *SignupUserReq) Validate() error {
 		return FormatEmptyPasswordError("user")
 	} else if len(s.Password) > 32 {
 		return ErrPasswordTooLong
-	} else if !alphaNumReg.MatchString(s.Password) {
+	} else if !alnumPrintReg.MatchString(s.Password) {
 		return ErrPasswordHasInvalidChar
 	}
 	return nil