Network testing device

The utility model relates to the technical field of network testing equipment, in particular to a network testing device, which comprises a network tester, a plurality of network cable testing interfaces are arranged on the front end side and the back end side of the network tester, a detention piece is arranged on the side of the network tester at the position corresponding to the network cable testing interfaces, and the detention piece comprises a movable frame. A transverse through groove is formed in the center of the movable frame, and a plurality of restraint rings are embedded in the through groove. According to the utility model, a network cable passes through the central position of the restraint ring, the movable frame is fixed through the clamping block after being rotated, the movable frame is parallel to one side of the network cable test interface, and the rubber block is attached to the outer side of the end of the network cable to form an extrusion effect, so that the end of the network cable