Vertical carton forming machine, using cylinder suction box mechanism, forming according to the carton size is different; In the production process can be independent stand-alone operation, but also wiring operation, suction box, unpacking, folding bottom cover, bottom sealing box to complete; Carton vertical storage, convenient to fill empty carton, no need to stop operation, and with carton shortage alarm function, tape shortage alarm function; It is suitable for batch use of carton of the same specification. Manual adjustment is required when changing carton. There is a scale display on the adjusting rod to facilitate recording.