This present invention relates to a film-forming composite used to make starch softgel capsules and the method to prepare it. The said composite is made from water and hydroxypropyl starch by specific percentage, plus (optional) light-screening agent, colorant, and flavoring agent. Mix up the above components in sequential order and then process the mix into film-forming composite through controlled heating. The composite such made can be directly used to make starch softgel capsules by the conventional method applied for the gelatin capsule production.