Abstract: The present invention relates to a continuous and automatic operation control method and apparatus for an automatic photo-composer, and is composed mainly of the steps of attaching a mark such as a bar code on a photographic original plate prior to the printing work by a photo-composer, setting up the predetermined amount of a photographic original plate and a photosensitive plate in a holder of the automatic photo-composer, reading the contents of the mark attached on each photographic original plate by a mark reader arranged in the photo-composer after starting to operate the photo-composer, and causing the automatic photo-composer to execute processes necessary for the photographic original plate in accordance with the computer program.