The invention discloses a multifunctional zipper checking machine and a method for mounting a zipper by applying the multifunctional zipper checking machine. The multifunctional zipper checking machine comprises an unwinding roller, a pulling roller, a variable frequency motor A, a swing roller (4), a conveying roller A, a dotted-line hole punching device, a transverse zipper mounting device, heat sealing devices, cooling devices, a color scale detecting device, a conveying roller B, a swing roller (11), a winding roller, and a variable frequency motor B, wherein a potentiometer A is arranged above the swing roller (4), and a potentiometer B is arranged above the swing roller (11); the longitudinal swing amplitude data of the swing rollers is respectively transmitted to the variable frequency motor A and the variable frequency motor B to respectively control unwinding speed and winding speed; and the dotted-line hole punching device, the transverse zipper mounting device, the heat sealing devices, the cooling devices and the color scale detecting device are arranged between the conveying roller A and the conveying roller B. According to the multifunctional zipper checking machine, through a PLC control system, zipper strips are transversely fixed on the set positions of a single-layer or multi-layer film at intervals in a heat sealing manner, and a hot knife heat sealing manner or an ultrasonic device and the like can be adopted to achieve the purpose of performing fixing through heat sealing.