Abstract: This research, according to the natural condition of sugarcane areas in Yunnan Province, concludes the knowledge of sugarcane cultivation technology as foundation, and the DET 1.1 was used as developing tools to combine each situation, sugarcane varieties, propagation, fertilizer, rotation, etc as main module, by means of letter, pictures, and movies to interact with user. The Yunnan sugarcane cultivation intelligent expert system was developed.