The invention discloses a method for preparing starch-based softgel capsules, which, specifically, includes the following 2 steps: 1, Extrude the starch-based premixed material into starch-based extrusion film, 2, Apply the gel solution coating to the extrusion film to form composite starch film, 3) Process two composite starch films into starch-based softgel capsules by rotary die process.