To preparation of general drawings of the underground driving devices of detachable ropeways more accurately and quickly,general drawings of the underground driving devices of detachable ropeways were completed with the help of various secondary development interfaces,tools and the secondary development programming of AutoCAD,which will program the repetitive and tedious operations and transform the tedious and error-prone manual process into an efficient and accurate automatic process.The secondary development of AutoCAD promotes the development of ropeway standardized drawing towards electronization and automation,making the drawing more efficient and accurate.