Performance test method for vehicle-mounted USB equipment

The invention discloses a performance test method for vehicle-mounted USB equipment. The method comprises the following steps: A, electrifying; and B, loading. The method also comprises the following steps that C, a PC machine sends a command in an appointed directory to the vehicle-mounted equipment, and the vehicle-mounted equipment receives and executes the command; D, the PC machine sends a command for operating a testing script in the appointed directory to the vehicle-mounted equipment, and the vehicle-mounted equipment receives and executes the command; and E, the PC machine reads information acquired in the step D line by line, compares error information, and if a situation that a copyfile and a testfile are inconsistent in size or content, the type and time of errors are stored. According to the invention, the copying speed and copying satisfaction situation of the vehicle-mounted equipment at different copying intensities are synthetically considered, so that the reliability of copying operations of the vehicle-mounted USB equipment at different copying intensities can be reflected, and therefore, the error rate is reduced, the reliability of test results is improved, the type of errors can be accurately defined, and then the time for solving problems is shortened.