A method and apparatus for converting a photo slide into a motion picture in a mobile terminal by which the photo slide including a plurality of photos is converted into the motion picture for MMS (Multimedia Message Service) message transmissions, thereby being able to be transmitted at a time, the method comprising: selecting a plurality of photos and storing the photos as a photo slide; establishing a transmission for the photo slide; automatically establishing an optimal combination of image quality and resolution according to the number of photos composing the photo slide; automatically converting the photo slide into a motion picture according to the optical combination; and transmitting the motion picture to a destination which a user selects.