The invention provides a visual 
servo control method of a multi-task 
surgical robot, and belongs to the technical field of surgical robots. The method comprises the steps of adopting the relative coordinate relation of the front end of the 
surgical robot and a 
surgery part as a control basis, extracting a control characteristic from an image acquired by 
image acquisition equipment, updating relative coordinate information in real time, according to the relative coordinate information, planning a 
surgery motion path, controlling the motion of a motion mechanism, achieving target 
surgery operation, and by replacing types of the control characteristic and the front end of the 
surgical robot, achieving a multi-task function. According to the visual 
servo control method of the multi-task surgical 
robot, the installation of additional markers and a calibration process are avoided, moreover, when a work mode based on visual 
servo is compared with a traditional work mode of the surgical 
robot,namely, 'planning before surgery and execution during surgery', higher surgery precision can be obtained.