Protective fence with splicing mechanism for house building construction

The utility model discloses a house building construction guard railing with a splicing mechanism, which comprises a stand column and a guard plate body, the middle end of the front side of the stand column is provided with a first fixing groove, the left side and the right side of the front side of the stand column are provided with second fixing grooves, and the middle ends of the left side and the right side of a sliding block are fixedly connected with connecting blocks. Movable blocks are fixedly connected to the middle ends of the left side and the right side of the protection plate body, the upper surfaces of the connecting blocks make contact with the lower surfaces of the movable blocks, a plurality of fixing holes are formed in the upper end of the front face of the protection plate body, and a plurality of connecting pieces are movably connected to the lower end of the front face of the protection plate body; the lower surface of the protection plate body is fixedly connected with a plurality of in