The present invention is a method for controlling a Davinci surgical device. Firstly, controlling an operation part of a remote operation device to enter the inner of a body for executing a surgical operation. Then, an image capturing unit captures a plurality of corresponding surgical images to a control device, and the control device obtains a first torque component, a second torque component and an element action of the remote surgical device according to the surgical images to operate an output strength of the remote surgical device for further generating corresponding strength feedback by the output strength. Thus, the user can get the control status of the remote surgical device to prevent accidental iatrogenic injury from over-force and to proceed with the operation with improved accuracy.