Objective This study focuses on the continuous mechanized production of quadrangular Zongzi leaves, involving the processes of zongzi leaf forming, filling, and strapping. The design of an automatic folding and forming process and device for Zongzi leaves is proposed.Methods The functions and requirements of Zongzi leaf folding and forming were analyzed, and the technical principles and processes were studied. In line with the requirements for continuous mechanized production, the folding and forming technology of Zongzi leaves was explored.Results A Zongzi leaf forming, filling, and strapping process was proposed, based on a Zongzi mold to achieve rotating folding and continuous operation. The overall device and key mechanisms were designed.Conclusion The designed process and device for Zongzi leaf transfer, pre-forming, filling, edge folding, and sealing can meet the flexible pre-forming requirements for the Zongzi leaves used in quadrangular Zongzi.