The utility model relates to a defeated substation equipment appurtenance field, concretely relates to intelligence cabinet protection casing, including a cross axle, the one end vertical fixation of cross axle sets up a stand, has a through -hole on the stand, and the handle revolves in the through -hole and runs through through the screw thread, the other end of cross axle is provided with a L type cylinder, and an edge of cross axle and L type cylinder all is provided with the same spacing hole of several size, and the buckle lies in same one side of cross axle through spacing hole fixed connection cross axle and L type cylinder, the another side and the stand of L type cylinder, rain -proof skeleton is connected to the opposite side of cross axle, installs the waterproof cloth on the rain -proof skeleton. The utility model discloses at telescopic protection casing of intelligent cabinet top installation, strut the protection casing rainy day, accept in the time of fine, make the operation of intelligent cabinet more convenient, increased the security performance to this protection casing all is suitable for the intelligent cabinet on pinnacle, flat top, oblique top.