To solve the problems of sucker suction delivering cardboard and friction succession delivering cardboard , design a kind of carton forming machine based on the principle of intermittently delivering cardboard. Describe the principle and structure of carton forming machine. Introduce the design methods of the intermittently delivering cardboard mechanism and the forming mechanism, and the control hardware and software as well. The result shows that the design can improve the degree of automation of the carton packaging products, reduce the labor costs, and have good adaptability.