Breast board frame for steel structure hog house

The utility model relates to the technical field of manufacturing of steel structure building accessories, in particular to a breast board frame for a steel structure hog house, which comprises a basic frame and a heightening frame, the basic frame comprises two stand columns arranged side by side, a first cross beam is arranged at the bottoms of the two stand columns, and a second cross beam is arranged at the positions, close to the tops, of the two stand columns. A plurality of connecting cross beams are further arranged between the two stand columns side by side, the heightening frame is detachably arranged at the top of the basic frame, the heightening frame and the basic frame are in the same horizontal direction, the heightening frame comprises a frame defined by sectional materials, and a fence is arranged on the inner side of the frame. The fence plate frame is simple in structure, high in practicability and favorable for achieving rapid machining, the height of the railings of the hog house can be c