Detection apparatus for rail mounted safety hook, it mainly includes: crossbeam, fixing support, dynamic mechanics sensor, screw thread formula rotational locking connector, four different kinds of tracks, O types encircle lower string of point, fixing support welding on one mainly plays the crossbeam of the effect of bearing the weight of, it has one to have orbital swivelling joint ware to meet through a mechanics sensor below the fixing support to through this swivelling joint ware the swivelling joint ware under be connected with lower string of point on the O type ring that other shock -testing of afterburning dot OR when detecting dynamic mechanics sensor hung the point, the swivelling joint ware be a screw thread formula rotational locking connector that constitutes by microscler square steel tube at least, four faces of square steel tube on have the track of four different models respectively with the bolt fastening, screw thread formula rotational locking connector will the track is locked on screw thread formula rotational locking connector after aiming at the releaser, it has rational in infrastructurely, compact, uses characteristics such as convenient operation, convenient standard.