A multimedia messaging method and apparatus for a mobile terminal supporting Multimedia Messaging Service (MMS) is provided for the mobile terminal to relay a multimedia message, edit multimedia object attached to the multimedia message, and feed back the multimedia message attaching the edit multimedia object. A multimedia message transmission method of the present invention includes composing a multimedia message in a multimedia message composition mode, inserting sender information and a recipient information into the multimedia message; creating a relay message by defining a type of the multimedia message as the relay message; and sending the relay message with reference to the recipient information.