The utility model provides a multicore cable check out test set, includes host computer and the next machine, three singlechips, USB bus switching chip, power supply chip are drawn together to the next press packed bale to and the cable socket, the singlechip passes through USB bus switching chip and upper computer connection, cable socket connected on IO interface on the singlechip and the circuit board. A slice in three singlechips is as the host computer, and all the other two as from the machine, passes through USB bus switching chip and upper computer connection as the singlechip of host computer, is connected to as on the singlechip of host computer as two singlechips from the machine. Compared with the prior art, the utility model the advantage lie in: this equipment circuit simple structure, available I/O interface is many, the break -make and the short -circuit fault of test multicore cable subassembly that can be quick, accurate.