The present invention belongs to the technical field of air conditioner heat exchange tube detection, and especially relates to a pipeline quality detection device. The device comprises a heat exchange tube, the inner wall of the heat exchange tube is provided with a spiral groove, the detection device comprises a hoisting clamp, a detection head and a location device, the heat exchange tube is vertically clamped on the hoisting clamp, the hoisting clamp is connected with the detection head through a rope, and the detection head is connected with the location device; and the detection head isplugged in from the upper end of the heat exchange tube to allow a detection wheel on the detection head to be in contact with a groove edge of the spiral groove, and the detection head slides in theheat exchange tube to detect a leakage point. The pipeline quality detection device can conveniently and rapidly obtain the length, depth and position information of the leakage point so as to providereference for improvement of a spiral groove processing process, avoid the influence generated by the groove edge of the spiral groove when an ultrasonic wave measurement head is directly used for detection and solves the problem that the leakage point is difficult to detect at the side wall of the spiral groove.