Summary of case history,　Ma, male, 7 years old, 8 months, with"Left groin pain for 3 months" as the main complaint, on May 24,2017 first visit. The patient developed pain in the left inguinal region 3 months ago and was not effectively treated with multiple therapies. Symptoms: left groin pain, limited movement, claudication, squatting difficulties. No morning stiffness. Dry mouth, normal appetite, poor sleep (because of joint pain) , two normal stool. Tongue Red, moss less and dry, pulse string count. Perfect the relevant examination, Western medicine diagnosis for juvenile idiopathic arthritis and femoral head epiphysis ischemic necrosis, traditional Chinese medicine diagnosis for arthralgia disease, kidney-yin deficiency syndrome. According to the Huangdi Neijing, Yin governs its shape and Yang governs its use. Also Cloud: Kidney main bone marrow. Liuwei dihuang pill decoction to add or subtract treatment. After 6 years of traditional Chinese medicine treatment, from the beginning of the femoral head epiphysis ischemic necrosis to the femoral head basic recovery of the original shape, time has given us a satisfactory answer, firm our determination and confidence in the clinical application of traditional Chinese medicine.,TCM diagnosis,　arthralgia disease (kidney-yin deficiency syndrome).,Western medicine diagnosis,　juvenile idiopathic arthritis with epiphyseal avascular necrosis of the femoral head.,Therapeutic methods,　Traditional Chinese Medicine, non-steroidal anti-inflammatory drugs,Clinical outcomes,　The disease was controlled and the patient's femoral head returned to its original shape.