Abstract: A split trailer shackle is disclosed, including a bolt and a reinforcing assembly. The bolt includes a rod body, a middle of the rod body is rotatablely connected with a main hook, and an upper surface of a front end of the main hook is symmetrically provided with positioning blocks; a left end of the rod body is rotatablely connected with a secondary hook, the positioning blocks are detachably inserted with a slot at a front of the secondary hook respectively, and a right end of the bolt is threaded with a nut. The reinforcing assembly includes a rotating shaft and a positioning seat, the rotating shaft is disposed in a middle of the main hook. The reinforcing assembly further includes posts. The split trailer shackle is easy to open and thus can quickly sling, meanwhile it also can be closed for lock, and the use of high security.