The utility model discloses an anti-clamping-stagnation hanging device for a rigid hanging contact net and relates to the field of metro power supply system overhead rigid hanging contact nets. The device comprises a vertical suspension mounting base. A sliding way is arranged at the bottom of the vertical suspension mounting base. An insulator and a locating wire clamp are arranged at the bottom of the sliding way. The locating wire clamp is connected with the sliding way through the insulator. The locating wire clamp is fixedly connected to the bottom of the insulator through a bolt. A sliding groove is formed in the bottom of the sliding way. A disc spherical surface insulator hardware fitting is arranged in the sliding groove. The sliding way is connected with the insulator through the disc spherical surface insulator hardware fitting which can slide and rotate in the sliding groove. The rotating range of a busbar during temperature changing at a sharp turn position is expanded, shuttling is easy, free moving in the route direction can be achieved, a circuit is smooth, when the locating wire clamp reverses, the insulator is safe, and using cost is low.