For the difficulties of communication and power cable maintenance and detection, we have designed and developed integrated intelligent cable fault tester. The tester uses the methods of principle that the incident wave would reflect at the changed media when transmission media is discontinuous, high-voltage breakdown and high-voltage digital bridge to test. Our Design adopts large-screen LCD, an increase USB interface, dual interfaces work. Its main functions include: a variety of cable length and transmission speed measurement; rapid detection of various faults of communication cable and all kinds of power cable lines under 35KV; rapid detection of low-voltage cables and control cables malfunction.