Summary of case history,　The patient Dou, female, 46 years old, visited the hospital on October 4,2021 due to "stiffness and pain of waist and back for 7 years, hip joint pain for 5 months and aggravation for 2 days". Seven years ago, the patient had stiffness and pain of waist and back without obvious inducement, which could be relieved by himself after activity. After local treatment, the effect was not good, and the symptoms were progressively aggravated. In 2015, the patient was diagnosed with "ankylosing spondylitis" in our hospital, and the drug was discontinued automatically after the symptoms were improved after treatment with sulfasalazine and other drugs. 5 months ago, bilateral hip joint pain, difficulty in bending over and getting up, visited the outpatient department of our hospital again, and was given Sulfasalazine, Methotrexate Tablets and other drugs for treatment, after which the symptoms were relieved. The patient was worried about drug side effects, and stopped oral methotrexate by himself for 1 month. The patient had aggravation of the above symptoms without obvious inducement 2 days ago, so he came to our hospital for further systematic treatment. Symptoms and signs: the patient had pain in bilateral sacroiliac joints and hip joints, difficulty in bending and getting up, aggravated pain when lifting heavy objects, stiffness and pain in waist and back. The patient was clear in consciousness, poor in spirit, passable in appetite, poor in sleep, and diuresis. Emotional failure, good sigh, mild anxiety. Menstrual period is short and quantity is little, cycle is lengthened, classics goes bellyache. Dark red tongue, thin white fur, wiry thin pulse.,TCM diagnosis,　Dyphosis (liver and kidney deficiency, cold dampness obstruction syndrome).,Western medicine diagnosis,　Ankylosing Spondylitis.,Therapeutic methods,　Traditional Chinese medicine treatment uses the methods of soothing the liver and regulating qi, softening the tendons and unblocking the collaterals, taking Zhuangdu Tang and Honghua Xiaoyao Tablets orally, and combining them with Panlong Moxibustion for treatment; Western medicine provides anti-inflammatory, analgesic, anti rheumatic, and immunosuppressive treatments.,Clinical outcomes,　The patient's joint pain was significantly reduced, and the stiffness of the lower back basically disappeared. Blood routine, erythrocyte sedimentation rate, and CRP are all within the normal range, and liver and kidney functions are normal. No recurrence was observed during a six-month follow-up.