A device of vibro-spot welding includes: a vibration cylinder housing having first and second chambers; an annular rod integrally connected with a first piston disposed in the first chamber and having one end penetrating a side of the vibration cylinder housing; a circular rod penetrating the annular rod integrally connected to a second piston disposed in the second chamber and having one end penetrating the side of the vibration cylinder housing; a leading-in housing wrapping an exterior surface of the vibration cylinder housing and receiving current; an electrode supporter threaded with one end of the leading-in housing; a heating electrode threaded with one end of the electrode supporter; a first vibration electrode threaded with the one end of the annular rod and penetrating the electrode supporter and the heating electrode; and a second vibration electrode threaded with the one end of the circular rod and penetrating the first vibration electrode.