A robot-assisted system for transurethral surgery, comprising: a workstation; a display device, wherein the display device is communicatively connected to the workstation, and configured to receive display data transmitted from the workstation and display images to a surgeon based on the display data; a human-computer interaction device, wherein the human-computer interaction device is communicatively connected to the workstation, and configured to acquire operation instructions input by the surgeon and transmit the operation instructions to the workstation; a resectoscope comprising a cutting loop, wherein the resectoscope is communicatively connected to the workstation, and configured to transmit acquired image information to the workstation and control a current intensity of the cutting loop according to a first control signal received from the workstation; a resectoscope holding device, wherein the resectoscope holding device is communicatively connected to the workstation, and configured to hold the resectoscope and drive the cutting loop to move forward and backward along an axis of the resectoscope according to a second control signal received from the workstation; a six-degree-of-freedom series-connected mechanical arm, wherein the six-degree-of-freedom series-connected mechanical arm is communicatively connected to the workstation and fixed to the resectoscope holding device, and the six-degree-of-freedom series-connected mechanical arm is configured to drive, according to a third control signal received from the workstation, the resectoscope holding device to move forward and backward along the axis of the resectoscope, rotate around the central axis of the resectoscope and rotate around a preset point on the central axis of the resectoscope; wherein the workstation is configured to: generate the display data according to the image information acquired from the resectoscope and transmit the display data to the display device; generate the first control signal according to the operation instructions acquired from the human-computer interaction device and transmit the first control signal to the resectoscope; and/or generate the second control signal and transmit the second control signal to the resectoscope holding device; and/or generate the third control signal and transmit the third control signal to the six-degree-of-freedom series-connected mechanical arm; wherein the workstation is configured to: based on an area represented by a certain point P in a resectoscope image being selected as a resection area, perform calculation, and control the six-degree-of-freedom series-connected mechanical arm to rotate around a certain axis in space to achieve that a lowest point of the cutting loop moves to the point P. a workstation; a display device, wherein the display device is communicatively connected to the workstation, and configured to receive display data transmitted from the workstation and display images to a surgeon based on the display data; a human-computer interaction device, wherein the human-computer interaction device is communicatively connected to the workstation, and configured to acquire operation instructions input by the surgeon and transmit the operation instructions to the workstation; a resectoscope comprising a cutting loop, wherein the resectoscope is communicatively connected to the workstation, and configured to transmit acquired image information to the workstation and control a current intensity of the cutting loop according to a first control signal received from the workstation; a resectoscope holding device, wherein the resectoscope holding device is communicatively connected to the workstation, and configured to hold the resectoscope and drive the cutting loop to move forward and backward along an axis of the resectoscope according to a second control signal received from the workstation; a six-degree-of-freedom series-connected mechanical arm, wherein the six-degree-of-freedom series-connected mechanical arm is communicatively connected to the workstation and fixed to the resectoscope holding device, and the six-degree-of-freedom series-connected mechanical arm is configured to drive, according to a third control signal received from the workstation, the resectoscope holding device to move forward and backward along the axis of the resectoscope, rotate around the central axis of the resectoscope and rotate around a preset point on the central axis of the resectoscope; wherein the workstation is configured to: generate the display data according to the image information acquired from the resectoscope and transmit the display data to the display device; generate the first control signal according to the operation instructions acquired from the human-computer interaction device and transmit the first control signal to the resectoscope; and/or generate the second control signal and transmit the second control signal to the resectoscope holding device; and/or generate the third control signal and transmit the third control signal to the six-degree-of-freedom series-connected mechanical arm; wherein the workstation is configured to: based on an area represented by a certain point P in a resectoscope image being selected as a resection area, perform calculation, and control the six-degree-of-freedom series-connected mechanical arm to rotate around a certain axis in space to achieve that a lowest point of the cutting loop moves to the point P.