The utility model provides a sliding resistance inspection device, the high -efficient sliding resistance of just checking the pull head on the rectangular fastener stringer accurately in succession.Sliding resistance inspection device possesses: a pull head for making the meshing of fastener stringer's zip fastener chain tooth is and relieve the meshing, the movable inspection portion that keepsthe pull head, with the drive arrangement who makes fastener stringer advance on length direction. Movable inspection portion possesses: with the pull head together along fastener stringer's length direction reciprocating motion's movable part, with the slide portion of supporting the movable part with the mode of reciprocating motion freedom. Still possess: detect the sensor portion of the action of movable part, with sliding resistance signal processing device, its output signal to sensor portion carries out fourier transform to the filtering of going on getting rid of the regulation frequency band of the signal behind the fourier transform is handled, and signal after handling filtering carries out inverse fourier transform makes it resume crude signal aspect, detects the unfavorable condition of zipper strip according to the signal processing's that resumes into the original information form abnormal value.