Assembly type water retaining protective fence foundation

The utility model relates to the field of foundation pit edge protection construction, and discloses an assembly type water retaining protective fence foundation which comprises corner modules and standard knots, the corner modules comprise transverse knots and vertical knots which are integrally formed, the transverse knots and the vertical knots are in a T shape, the surfaces of the two ends of the transverse knots and the surfaces of the ends, away from the transverse knots, of the vertical knots are all provided with corner formwork inserting holes, and the standard knots are arranged in the corner formwork inserting holes. The surfaces of the two ends of each standard knot are provided with standard knot inserting holes, the end faces of the standard knots abut against the end faces of the transverse knots or the end faces of the vertical knots, U-shaped connecting anchoring parts are inserted between the angle mold inserting holes between the angle mold blocks and the surfaces of the standard knots and