The invention discloses a detection device with a plastic fastener assembly, which comprises a device body, a base plate, a support plate, a detection frame, a mounting plate, a guide post and a ball screw extending below the device body, wherein the support plate is arranged above the middle of the base plate, the guide post is positioned between the base plate and device body, the detection frame is arranged above the support plate, a guide sleeve sheathed on the guide post is arranged at the circumference of the mounting plate, a mounting plate connection frame is fixedly connected above the middle of the mounting plate, the mounting plate connection frame is matched with the ball screw, a rubber pressure head is arranged below the middle of the mounting plate, a light sensor and a displacement transducer are mounted on the detection frame, and an electric cabinet and a warner are mounted on the device body. By adopting such a structure, the detection device with a plastic fastenerassembly is convenient to operate, and can reduce the detection workload, improve the production efficiency and ensure the detection accuracy.