The invention discloses a slide wire breakpoint connector fixing device which comprises a fixing plate close to a slide wire breakpoint connector. A fixing groove for fixing a guide rail is formed in the lower side of the fixing plate, and a folded edge extending in the longitudinal direction of the guide rail is arranged at the edge of the fixing groove. According to the embodiment of the slide wire breakpoint connector fixing device, the fixing groove in the lower side of the fixing plate and the guide rail are fixed together, the fixing plate and a support are fixed through fastening parts, and the position of the fixing plate is limited by a locating part. Thus, the effect of fixing the aluminum guide rail is achieved, the position of the guide rail is prevented from skewing when an overhead travelling crane strikes the breakpoint connector, and the stability of equipment operation is improved.