A socket retaining assembly includes a retaining assembly having a seat, and a retaining post; the retaining post being installed at an upper end of the stopper; an outer periphery of the retaining post being installed with a confining projection and a plurality of trenches; a combination unit including a rotating assembly and a push unit; the stopper serving to confine the rotation range of the combination unit; the rotating assembly has a C ring at a lower end thereof two ends of an opening of the C ring being concaved inwards so as to form with inward projections; an upper side of the C ring being installed with a rectangular protruding block; an interior of the protruding block being formed with a rectangular receiving groove; and the push unit being installed in the receiving groove of the protruding block.