Patients with necrosis of the femoral head can have a moderate sex life according to the situation. Because some patients with necrosis of the femoral head only have hip pain in the early stage and joint movement is affected. If there is a demand for sexual life, it is necessary to reduce the weight bearing of the hip joint. With the aggravation of the disease, there will be severe hip pain, limp, joint flexion limitation. At this time, sex should be moderate and not too frequent. At the same time, the position should be changed appropriately to avoid too much movement causing injury. If the pain has been relieved after the joint replacement surgery, you can choose the appropriate position and have a moderate sex life under the guidance of the doctor. Therefore, patients with necrosis of the femoral head can have sexual life, but according to the treatment status, current treatment measures, comprehensive judgment to choose the appropriate frequency and movement.