Artificial hip replacement is an important method to treat advanced femoral head necrosis. If the operation is very successful, the recovery is faster, but after being discharged from the hospital, patients should still pay attention to some life details. Post-operative care of artificial hip replacement is as follows: 1, sitting position: sitting time should not be too long in the first month after the operation, so as not to lead to hip edema, can also be improved by applying cold compresses and elevating the affected limbs, keep the knee joint lower than or equal to the hip, should not sit on too low a chair or sofa, do not cross your legs and do not bend your body more than 90 degrees, lean backward and stretch your legs forward when you are sitting. 2.Toilet: Use the elevated homemade toilet seat to enter the toilet, or lean back with assistance and stretch the affected leg forward to enter the toilet, and pay attention to keep the knee joint higher than the hip. 3.Fetching objects: do not bend down to pick up things on the ground within 2 weeks after surgery, do not turn around suddenly or reach behind you to fetch objects, and it is advisable to put the rice bowl in front of you when you eat. 4.Taking a car: sit forward in the hip position, lean backward and stretch your legs forward as much as possible. 5.Showering：After the wound has healed, rely on a reliable object to take a shower, because standing shower is dangerous, so you can sit on a high stool, the nozzle is a removable hand-held nozzle, and prepare a shower sponge with a long handle in order to be able to touch the lower limbs and feet. 6, put on and take off shoes and socks, please ask others to help or use a shoe puller, choose the elastic shoes and loose pants without lacing, those with posterior posterolateral incision can lift their shoes medially, and those with anterior posterolateral incision can lift their shoes externally. 7.Physical activities that can be carried out after complete rehabilitation: walking, gardening, cycling, bowling, table tennis, swimming, dancing, and maintaining proper weight. Avoid activities that cause wear and tear by exerting excessive pressure on the new hip joint, such as enthusiastic, fast running, skiing, water skiing, tennis and so on. These methods of postoperative care after artificial hip replacement are what patients and their families should pay attention to when they undergo replacement surgery. In life, if you can do these, it will help a lot to prolong the life of the prosthesis and delay the arrival of revision surgery.