Including: air tightness detection, loop detection, staple detection, error-proofing test (terminals are not in place, similar parts, secondary locks, etc.) through probe detection loops, it can identify staggered, short-circuited, missed insertion, and multi-insertion phenomena. Put the wrong wire harness into the holder, and the lead-through platform will report an error, failing to pass the test, and a failure label will be issued; if the qualified wire harness is put into the holder, the test will be passed, and a qualified label will be issued.