The utility model relates to an on - -spot multi -functional general type failure analysis system of electric power. On - -spot multi -functional general type failure analysis system of electric power be equipped with on -the -spot portable test terminal, handheld terminal, national grid standard concentrator module, mobile terminal, main nucleus module all need be passed through to communication of each component parts, and detection terminal passes through serial communication receive information, behind main nucleus module, carries out information processing through 20092013 editions accurate communication interface of state's network mark to national grid standard concentrator module again and perhaps encapsulates earlier, and after accomplishing, passback to main nucleus module arrives power module again, to low -voltage power line, accomplishes hou mian work, the concentrator module is installed on detection terminal, receives the order that handheld terminal or mobile terminal sent out and communicates through carrier system and ammeter module to to return the data of coming on in same carrier system passback to detection terminal, finally communicate through the serial port communication module on the detection terminal or bluetooth communication module and handheld terminal or mobile terminal, realize various detection functions.