The invention is a gas insulated switchgear with cabinet-combining limiting devices. The gas insulated switchgear comprises a cabinet body; four cabinet-combining limiting devices are arranged at the wall of one side of the cabinet body in a rectangular manner; the two upper cabinet-combing limiting devices are flush with the edge of the upper end surface of the cabinet body; and the two lower cabinet-combing limiting devices are arranged in the middle of the side wall. The cabinet-combing limiting devices are U-shaped bending limiting plates; and the side plates at the two sides of the U-shaped bending limiting plates are welded to the cabinet body in a horizontal direction. When cabinet combination is carried out, limiting surfaces of U-shaped bending limiting plates at the left side wall and the right side wall of the left and right gas insulated switchgear units are in contact to prevent continuous approaching of gas tanks of the two gas insulated switchgear units so as to keep safety distances. The gas insulated switchgear has a simple structure; the contact areas of the U-shaped bending limiting plates are large; the deformation is low; the strength is high; and the cabinet combining can be carried out conveniently and rapidly.