Artificial joint surgery has evolved over the past fifty years to reach a level of safety and reliability. Over 90% of artificial joints are reported to be successful 20 years after surgery. Modern artificial joints have reached the wear-resistant, durable, into the body does not occur rejection. Patients who originally walked with a limp can move freely after surgery and even forget it exists. However, the polyethylene in the artificial joint still has the problem of wear and tear, so the patient should not be overly active after the operation, and should wear soft-soled shoes with low heel, take appropriate field walks, outings and indoor work, but should not climb too much, go up and down stairs, run, and preferably use exercises that do not increase the load on the joint, such as swimming, tai chi and gymnastics. On the day of surgery, the patient should maintain the special position of the affected limb: supine position with pillows between the knees, knees and toes upward to prevent internal rotation of the hip. When the patient’s vital signs are stable, the patient should adopt a semi-sitting position as soon as possible; ask the patient to start active contraction of the quadriceps, triceps and tibialis anterior muscles to accelerate venous reflux and prevent deep vein thrombosis. Give cold packs for 24 hours to relieve pain, keep the airway open, and encourage the patient to breathe deeply and cough to prevent lung infection. The first day after surgery: 1. Ankle dorsiflexion: Active maximum flexion and extension of the ankle joint and resistance training. Hold each movement for 5 seconds, repeat 20 times/group, 2 to 3 groups per day. 2.Quadriceps training: do static contraction of quadriceps, hold for 5 seconds each time, 20 times/group, 2-3 groups/day; at the same time, the patient can do straight leg raising exercise in bed, not requiring the height of lifting, but having a lag time of about 5 seconds; slowly flex the knee and hip to slide the heel of the affected limb toward the hip, keeping the toe upward to prevent internal rotation of the hip. 3, resistance muscle strength training: resistance adductor and resistance abductor and other long muscle strength training can be carried out, hold each action for 5 seconds, repeat 20 times/group, 2 to 3 groups/day. Postoperative day 2-3: Patients should be more active and strengthen the dorsiflexion, plantarflexion and quadriceps training of the ankle joint at the same time. Postoperative days 4 to 14: Focus on muscle strength exercise and increase joint activities, and discharge the hip joint with 70° to 90° of flexion, 15° of abduction and 10° of external rotation. Teach the patient to walk with a double crutch and arrange a post-discharge rehabilitation training program. During this period, supine straight leg raising and knee and hip flexion training should also be performed. And strengthen the postural transfer training and joint mobility training. Postoperative week 2 to 3: In addition to the above training, strengthen hip flexion, abduction and external rotation exercises, the training method must be correct to prevent joint dislocation. Train the patient to walk with a single crutch. Post-operative week 4 to 3 months: the patient should be trained to perform daily life functions, taught how to go to the toilet, put on and take off shoes and socks, sit in a car, go up and down stairs, and the patient who did not have a large rotor osteotomy should give up the crutches in about 6 weeks. At the same time, the patient should be asked to review regularly, and the following issues should be noted in daily life: 1. Sitting: the sitting time should not be too long in the first month after surgery, so as not to cause hip edema, which can also be improved by applying cold compresses and elevating the affected limb, keeping the knee joint lower than or equal to the hip, not to sit on a chair or sofa that is too low, not to cross the legs and ankles, not to bend forward more than 90 degrees, and to sit with the body leaning back and legs stretched forward. 2.Toilet: use a raised homemade toilet seat to go to the toilet, or lean back and extend the affected leg forward to go to the toilet with the assistance of the body, pay attention to keep the knee joint lower than the hip. 3.Fetching things: Don’t bend down to pick up things on the ground within 2 weeks after surgery, don’t suddenly turn around or reach for the objects behind you, and it is advisable to put the rice bowl in front of you when eating. 4.Ride: sit with your hips positioned forward, lean your body backward and stretch your legs forward as much as possible. 5.Shower: After the wound has healed, the auxiliary hold can reliably take a shower, because there is a certain danger of standing in the shower, so you can sit on a high stool, the nozzle is a removable hand-held nozzle, and prepare a bath sponge with a long handle so that it can reach the lower limbs and feet. 6.Put on and take off shoes and socks: ask someone to help or use shoe plugs, choose elastic shoes without laces, loose pants, and carry shoes medially for those with lateral incisions after the line and laterally for those with medial incisions before the line. 7. Physical activities that can be performed after full recovery: walking, gardening, cycling, bowling, table tennis, swimming, dancing, and maintaining proper weight. Avoid activities that produce excessive pressure on the new hip joint causing wear and tear, such as jumping, fast running, skiing, water skiing, tennis, etc. Precautions: The range of motion of the artificial joint is limited, and excessive flexion and internal rotation of the hip joint can cause dislocation. Patients need to pay special attention to avoid joint dislocation; infection of the artificial joint can cause disastrous consequences and should be avoided, including: 1. Keep the hip joint abducted: avoid crossing the legs and knees when sitting, standing or lying down. Keeping the feet 6 inches apart in the sitting position. When lying down, put a pillow cushion between the legs to keep the joint in the proper position. 2. Prevent excessive hip flexion: Keep both knees below hip level when sitting. Avoid sitting in a chair that is too short. You can sit with a pillow cushion to keep both knees below hip level. Avoid bending movements. Patients can consider buying long-handled shoe paddles or soft shoes so that they can put on and take off their shoes and socks without bending down. 3.If you have a cold and cough, sore throat and toothache, diarrhea and frequent painful urination, you should seek medical advice and take medication under the guidance of a doctor to avoid joint infection. 4. If you need to perform invasive operations such as tooth extraction, you should explain to your doctor and take oral antibiotics three days in advance to prevent joint infections.