Disclosed is a method for creating a user-customized menu in a portable radio telephone having a menu table in which service menus for a user are stored in association with corresponding indexes. The method comprising the steps of: upon receipt of a user-customized menu creating key, switching an operating mode of the portable radio telephone to a user-customized menu creating mode; receiving a user-customized menu index in the user-customized menu creating mode; after receiving the user-customized menu index, receiving a menu index to be set as menu contents in the user-customized menu index; and after receiving the menu index, storing the menu index in association with the user-customized menu index.