The invention relates to a zipper penetrating machine. The zipper penetrating machine can be mainly used for solving the problems that an existing zipper penetrating machine is not matched with a U-shaped clamping weight machine and automatic assembly line work can not be realized. The zipper penetrating machine is characterized in that two zipper drawing mechanisms are arranged, a roller (10) is arranged in a zipper induction detection device (2), a puller cutter point locating device (12) is arranged above a zipper lower mould pressure plate (11), a puller mould (3) can move along lateral direction vertical to a zipper moving direction, the puller mould (3) has two working positions, one is a position corresponding to a sender (4), and the other one is a position enabling the puller to be corresponding to the zipper. The zipper penetrating machine has the advantages that a double-drawing mechanism is adopted, an existing penetrating technology is changed, the tail of the puller output by the zipper is at the front and is directly input the U-shaped clamping weight machine after line penetrating is finished, and assembly line work can be realized; meanwhile, the puller cutter point locating device is added, locating is accurate, penetrating success rate is 100%, and customer requirement can be met.