A surgical slave robot is disclosed. The surgical slave robot, for performing a surgical operation with a surgical instrument installed on an end portion of a robot arm, can include: a main body; a major support arm that is coupled to the main body such that the major support arm is movable along one direction; a minor support arm rotatably coupled to the major support arm; and a plurality of the robot arms rotatably coupled to the minor support arm. By coupling a twofold support arm of a major and minor support arm to a tower-shaped main body and coupling multiple robot arms to the support arms, the surgical slave robot may be constructed with a compact and slim size that occupies a small amount of space, making it possible to position the surgical robot close to the patient while providing space for the surgeon to access the patient.