The present application discloses a surgical auxiliary device, which includes a first power assembly and a second power assembly, the first power assembly includes a first drive unit and a first transmission member, the first drive unit and the first transmission member are set in transmission, the first The transmission member is driven by the first drive unit, so that the first transmission member has an extended working state and a retracted working state, and the first transmission member can transmit torque; the second power assembly includes the second drive unit and the second transmission The second drive unit is set in transmission with the second transmission member, and the second transmission member is driven by the second drive unit adapted for transmission, so that the second transmission member has an extended working state and a retracted working state; An electric control unit is also included, and the electric control unit is electrically connected to the first drive unit and the second drive unit, so that the first drive unit and the second drive unit are controlled by the electric control unit. The surgical auxiliary device described in the present application has the advantages of simple structure, complete functions, easy portability, and easy manipulation.