The invention discloses an automatic croissant forming machine and relates to the field of food procession machinery. The automatic croissant forming machine is characterized by being composed of a dough sheet feeding and conveying frame, a wallboard, a prepressing roller component, a rubbing and rolling belt component and a finished product conveying frame, the dough sheet feeding and conveying frame is connected with the wallboard, the prepressing roller component and the rubbing and rolling belt component are arranged on the wallboard, and the wallboard is connected with the finished product conveying frame. Dough sheets in various shapes and thicknesses can be rubbed and rolled at a high speed, and the success rate is high.