The invention discloses a portable multidirectional ultrasonic-assisted vibration rolling device. The portable multidirectional ultrasonic-assisted vibration rolling device comprises an ultrasonic rolling unit, a hydraulic power unit, a pneumatic cooling unit, a main body frame and a dividing device; the ultrasonic rolling unit comprises an ultrasonic power supply and an amplitude transformer component; the ultrasonic power supply is connected with the amplitude transformer component; the hydraulic power unit comprises a hydraulic station, an oil distributing valve, a force application oil cylinder and an angle adjusting oil cylinder; the oil distributing valve is installed on the hydraulic station; the oil distributing valve is correspondingly connected with the force application oil cylinder and the angle adjusting oil cylinder through oil lines; the bottom of a cylinder body of the force application oil cylinder and the bottom of a cylinder body of the angle adjusting oil cylinder are hinged to the main body frame; the outer end of a piston rod of the force application oil cylinder and the outer end of a piston rod of the angle adjusting oil cylinder are hinged to the amplitudetransformer component; the dividing device is arranged on the main body frame below the amplitude transformer component; a gear workpiece is installed on the dividing device; and the amplitude transformer component is in rolling contact with the surface of a tooth socket of the gear workpiece. The integral rolling device is flexible and light-weight, an energy converter is subjected to cooling treatment continuously, a rolling steel ball is convenient to fix, and stations of the gear workpiece are convenient to adjust.