Artificial joint surgery has evolved over the past four decades to reach a safe and reliable level. Over 90% of artificial joints are reported to be successful 20 years after surgery. Modern artificial joints have achieved wear resistance, durability, and no rejection in the body. Patients who originally walked with a limp 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 excessively active after surgery, and should wear low-heeled soft-soled shoes, appropriate field walks, excursions and indoor work, and 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. Postoperative rehabilitation points: 1. On the day of surgery: 1. The special position of the affected limb should be maintained: supine position with pillows between the knees, knees and toes upward to prevent internal rotation of the hip. 2.When the patient’s vital signs are stable, semi-sitting position should be adopted as soon as possible. 3. Ask the patient to start active contraction of quadriceps, triceps and tibialis anterior muscles to accelerate venous reflux and prevent deep vein thrombosis. 4. Give cold packs for 24 hours to reduce pain. 5. Keep the airway open and encourage the patient to breathe deeply and cough to prevent lung infection. Second, the first day after surgery: 1. Remove the plasma drainage tube and urinary catheter in the morning (the flow of drainage is less than 50ml, if more than 50ml, it can be extended to the second day) 2. Instruct the patient to get out of bed and walk with a walker. Instruct patients to get out of bed again in the afternoon and teach them to get out of bed, go to bed and take steps correctly. Strengthen the muscle strength exercise of both lower limbs. At the same time, patients should be given psychological support. The more enthusiastic the patient is into it, the faster the recovery. 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, each 20 times/group, 2-3 groups/day; at the same time, the patient can do straight leg raising exercise on the bed, not requiring the height of lifting, but having 5 seconds left. Right stagnation time; slowly bend the knee and hip to slide the heel of the affected limb to the hip, keeping the toe upward to prevent internal rotation of the hip. (3) Resistance muscle strength training: resistance adductor and resistance abductor isometric muscle strength training can be performed, each action is held for 5 seconds, repeat 20 times/group, 2 to 3 groups/day. The patient should be more active and strengthen the dorsiflexion, plantarflexion and quadriceps training of the ankle joint. 4. Postoperative days 4-14: The patient should stop the infusion, focus on muscle strength exercise and increase joint activities, and discharge the patient with hip flexion of 70° to 90°, abduction of 15° and external rotation of 10°. The patient is taught to walk with a double crutch and a post-discharge rehabilitation training program is arranged. 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. Fifth, the second to third week after surgery: In addition to the above training, strengthen hip flexion, abduction and external rotation exercises, and 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 and walk up and down stairs. At the same time, patients should be asked to have regular review to prepare for their return to society. Patients discharged from the hospital after artificial hip arthroplasty should still pay attention to the following issues in daily life: 1) Sitting: the sitting time should not be too long in the first month after surgery to avoid 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 sitting on a chair or sofa that is too low, not crossing legs and ankles, not bending forward more than 90 degrees, and sitting with lean your body backward and stretch your legs forward. 2) Toileting: Toileting with a raised homemade toilet seat, or toileting with the body leaning back with the affected leg stretched forward with assistance, paying attention to keep the hip joint higher than the knee joint. 3) Fetching things: Do not bend down to pick up things on the ground within 2 weeks after surgery, do not turn around suddenly or reach for 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 be reliably showered, because there is a certain danger of standing in the shower, so you can sit on a high stool, the nozzle is a removable handheld nozzle, and prepare a bath sponge with a long handle so that it can reach the lower limbs and feet. 6) Putting on and taking 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 posterior lateral incisions and laterally for those with anterior medial incisions. 7) Physical activities that can be performed after complete recovery: walking, gardening, cycling, bowling, table tennis, swimming, dancing, and maintaining proper weight. Avoid activities that create excessive pressure on the new hip joint causing wear and tear, such as jumping, fast running, skiing, water skiing, tennis, etc. Special considerations: The range of motion of the new joint is limited. Patients need to take special care to avoid joint displacement, including: 1) Avoid crossing the legs and knees while sitting, standing, or lying down. 2) Keeping the feet 6 inches apart in the seated position. 3) Keeping both knees below hip level in the seated position. Avoid sitting in a chair that is too short. You can sit with a pillow to keep both knees below hip level. 4) When rising from a seated position, slide toward the edge of the chair and then stand up with a walking frame or crutches for support. 5) Avoid bending movements. Patients may consider purchasing long-handled shoe paddles or soft shoes so that they can put on and take off their shoes and socks without bending over. 6) Place a pillow cushion between the legs in the prone position to keep the joints in proper position. 7) Use a special abduction brace or splint to hold the hip joint in the proper position. 8) Raise the toilet seat so that the knee is kept below the hip when toileting. In the postoperative rehabilitation of patients, three principles of individualization, gradualness and comprehensiveness should be followed. In addition to the exercise of the affected limb, emphasis should be placed on the active activities of the healthy limb and upper limb, breathing training and psychological counseling to make patients eliminate their worries and enhance their confidence in life. Through rehabilitation, we can promote patients to recover their strength, increase muscle strength, increase joint mobility, reduce postoperative complications, and maximize the recovery of patients’ motor and daily living abilities.