With the increasingly improvement of residents’lives,obesity in adolescents has become an ur-gent problem to be solved which affects adolescents’health,lives and learning.Scientific exercise and ra-tional diet are two effective ways to losing weight of teenagers healthily.However,at present the fat teen-agers cannot be offered a scientific fitness direction.In the study,computer expert system has been ap-plied to simulate the experts’decision-making process,which can provide fat teenagers many services like obesity intelligent diagnosis,indi...