The invention discloses a liquid nitrogen auxiliary therapy device for the general surgery department, and relates to the technical field of medical apparatuses. The device comprises a main shaft rodin the middle; a coating liquid protection device is installed on an installing disc; an adjusting device is installed on the main shaft rod; a bearing disc is installed on a power device; the coatingliquid protection device comprises an annular liquid supply hose and an annular liquid return hose; liquid outlet pipes are installed in all installing holes; back-drawing pipes are slidably installed in all through holes; the adjusting device comprises a control rod; a C-shaped slide block slidably sleeves the main shaft rod; locating rods are uniformly and rotatably connected to the outer sideface of the slide block in the annular direction; the power device comprises a C-shaped support; a driving motor is installed at the front portion of the lower end of a handle. The device has the advantages that liquid nitrogen can be quickly and uniformly smeared, redundant liquid nitrogen can be timely recycled, the harm of liquid nitrogen is reduced, and the device is convenient to operate andhigh in safety.