Foundation pit protective fence

The foundation pit protective fence comprises two stand columns vertically arranged on the adjacent edge of a foundation pit and a protective fence body arranged between the two stand columns, the lower ends of the stand columns are fixedly connected with a bottom plate, and the bottom plate is fixedly connected with the adjacent edge of the foundation pit through a plurality of first connecting pieces; the opposite peripheral sides of the two stand columns are connected with fixing rods, the fixing rods are sleeved with first sliding blocks, the side faces, away from the guardrail body, of the first sliding blocks are hinged to supporting rods, the ends, away from the first sliding blocks, of the supporting rods are hinged to fixing plates, and the fixing plates can be fixedly connected with the edge of a foundation pit through second connecting pieces. The first sliding block is fixed to the peripheral side of the fixing rod through a locking assembly. The foundation pit protective fence has the effects tha