Abstract—Yoga is an old science. Yoga exercise could promote our physical health and improve the feeling of happiness, so it is becoming more and more popular and the establishment of Yoga learning and self-instruction expert system has great significance for the popularization and spread of Yoga. In this paper Yoga training knowledge is analyzed by using POAD expert system model, Yoga learning and self-instruction expert system is established taking Yoga training technique problem as framework, the definitions of MP4 objects in Yoga knowledge are given, system operation mechanism is designed accustomed to Yoga training, and Yoga learning and self-instruction expert system YogaExpert is developed.