The invention relates to a multi-support bidirectional piezoelectric driver which comprises a first piezoelectric vibrator, a second piezoelectric vibrator, a third piezoelectric vibrator, a first supporting leg, a second supporting leg, a third supporting leg, a fourth supporting leg, a first leg stand, a second leg stand, a third leg stand and a fourth leg stand, wherein the supporting legs arearranged on the lower surfaces of the piezoelectric vibrators, and the leg stands are connected to the free ends of the supporting legs. Alternating voltages can be exerted on two of the piezoelectricvibrators so that the two piezoelectric vibrators can be subjected to repeated bending deformation and the two leg stands can be driven to get close or get away, the friction force makes the leg stands and the supporting legs twisted to a certain extent, materials of different friction coefficients on the leg stands are pushed to make contact with a working face respectively, different magnitudesof displacement are generated on the leg stands, and finally the oriented movement of the driver is realized. Bidirectional driving is realized, and the driver has the advantages of being simple in structure, low in maintenance cost, low in requirement for the working face and capable of prolonging the service life of piezoelectric ceramic in the driver.