The invention discloses a bend two-way self-limiting corrugated expansion joint which comprises an expansion joint body, bends, support assemblies, nuts and pull rods. The support assemblies are positioned on the back faces of the bends at the two ends in a riding mode respectively and are fixedly connected with the bends. The support assemblies at the two ends are connected through the pull rods and the nuts. Hinge pins I are arranged on the back faces of the bends, and hinge pins II are arranged on the side faces of the bends. Bend connecting plates of the support assemblies are arranged on the hinge pins I in a sleeved mode and are limited by baffle rings I, and side plates of the support assemblies are arranged on the hinge pins II in a sleeved mode and are limited by baffle rings II. The bend two-way self-limiting corrugated expansion joint is further characterized in that the bend connecting plate of each support assembly is in clearance fit with the corresponding hinge pin I, the side plate of each support assembly is in clearance fit with the corresponding hinge pin II, the baffle rings I are fixedly connected to the hinge pins I in a welding mode, and the baffle rings II are fixedly connected to the hinge pins II in a welding mode. The bend two-way self-limiting corrugated expansion joint is small in welding stress, small in distortion relative to the support assemblies, and long in service life.