The invention relates to a punching machine for aluminum-plastic film for the outer packaging of a soft-packed lithium battery, comprising a supporting base plate and a punching device, the punching device is installed on the top of the supporting base plate; the punching device includes a punching frame, a supporting hydraulic cylinder , supporting mobile body, supporting telescopic body, telescopic body spring, lateral branch chain, rolling branch chain, stamping hydraulic cylinder, stamping mechanism, mobile body connection block, mobile body push rod, push rod connection frame and stamping bracket; The rolling branch chain includes a rolling electric slider, a rolling push rod, a rolling connecting frame, a rolling shaft, a rolling wheel, a telescopic wheel and a rolling spring. The present invention can solve the problem that the stamping die existing in the stamping of the aluminum-plastic film of the outer packaging of the soft-packed lithium battery cannot be adjusted, the position around the aluminum-plastic film will be deformed when the aluminum-plastic film is stamped, and the stamping effect of the aluminum-plastic film is poor. Wait for the problem.