The utility model provides a simple and easy interim guardrail between wall body, includes: the angle steel, expansion bolts, steel wire rope and wire line shoe, said angle steel is isometric with the guardrail, opens two steel wire rope holes and two bolt holes on the angle steel, and the angle steel is fixed on the wall through two expansion bolts, and the steel wire rope draws between the angle steel on the wall body of both sides through two steel wire rope holes, forms to protect temporarily to carry on through the wire line shoe exceptionally straight, the fastening. The utility model discloses effectively solved the traditional approach and set up interim guard rail and can produce more resource input, it is uneconomical, and the problem that expends time in, this device has utilized the inside wall structure work of protecting temporarily of building ingeniously, and the resource that has significantly reduced drops into the utility model discloses simple manufacture, convenient and practical greatly makes things convenient for and has simplified construction protection work, has higher spreading value