The invention relates to a contractible temporary bracket for a tunneling tunnel. The contractible temporary bracket comprises a top beam, a telescopic top beam, two auxiliary top beams, two side protecting plates, two connecting plates, two bracket moving seats, a group of pulleys and tracks, four telescopic oil cylinders, two auxiliary telescopic oil cylinders, four support upright pillars, four side protecting oil cylinders and the like, wherein the four telescopic oil cylinders are arranged between the top beam and the telescopic top beam, the auxiliary telescopic oil cylinders are arranged between the top beam and the auxiliary top beams, the four support upright pillars are arranged at two ends of the telescopic top beam and are vertical to the telescopic top beam, and the four side protecting oil cylinders are arranged between the top beam and the side protecting plates. By virtue of a gantry structure, the bracket bestrides a tunneling machine and matched assemblies of the tunneling machine in a coal mine tunnel, and the top beam and the telescopic top beam directly prop a top plate of the tunnel by virtue of the support upright pillars and the side protecting oil cylinders so as to support the top plate; the side protecting plates are supported between the top plate of the tunnel and the sides by virtue of the side protecting oil cylinders, so as to protect the sides of the tunnel; and the bracket can be transported after being contracted and is convenient and rapid, the repeated supporting is avoided, and the tunneling and anchor protection efficiencies are improved.