An active part and a passive part of a clutch can be exchanged by gas (liquid) control, and can be combined and overrun in both clockwise and counter-clockwise directions. Two shafts are connected by rollers, an outer retainer ring and a bumping block, and the inner cavity of the outer retainer ring is a plurality of wedge areas which are formed by a plurality of bilateral symmetrical inclines; aroller retainer is under the effect of the counterclockwise pre-tightening force of a tension spring, and the rollers cling to the corresponding inclines. When the direction needs to be changed, the retainer is pushed and driven by controlling gas (liquid) action so as to overcome the pretension of the tension spring and change the direction of the clutch. The clutch can be widely used in the field of mechanical transmission, and can be adapted to the requirements of more complicated working conditions in use.