A method for generating a movement path of a tool configured to utilize a virtual path to generate a correct path that fits an allowable error is provided. The method includes a receiving step implemented by receiving the virtual path and a precision data; an auxiliary point establishing step implemented by adding a plurality of auxiliary points in a plurality of arc sections; a moving and detecting step implemented by controlling the tool to sequentially move to a plurality of predetermined points and the auxiliary points according to the virtual path; and a calculating step implemented by amending the predetermined points or the auxiliary points in the virtual path if a difference between a real-time position coordinate and corresponding one of the predetermined points or the auxiliary points is greater than the allowable error to generate the correct path.