Weather changes have a greater impact on femoral head necrosis, and most patients with femoral head necrosis have aggravated their condition and unbearable hip pain when the weather changes. The hip treatment research center of Luoyang Orthopaedic Hospital introduces: the main reasons for this are two factors: humidity and cold. Humidity can cause dysfunction of skin respiration and metabolism in the hip and leg, resulting in increased microvascular congestion, stasis and exudation due to slow blood flow in the local tissues, which aggravates the patient’s symptoms. Therefore, in humid conditions, patients should keep their working and living environment dry in addition to appropriate activities to avoid aggravation of symptoms. Cold mainly causes blood circulation disorders such as stasis, ischemia and edema in the hip by constricting the blood vessels in the hip and leg, which aggravates the patient’s condition. Therefore, patients should not sit or sleep in cold places for a long time, and pay attention to more activities and keep warm in winter. After the disease has improved, hip exercises should be carried out appropriately to promote blood circulation and to prevent stiffness and restricted movement of the joint after healing. Do not exercise too much at the beginning. For example, if you do the action of bicycle riding on your back, you can exercise the front and back of the joint; if you do the action of leg cross on your back, you can exercise the left and right function of the joint; if you hold your knees with your hands on your back, you can exercise the all-round function of the joint; this exercise method is a non-weight-bearing exercise of the joint. Through the above-mentioned introduction, I think we are clear about it. In ordinary life, if the above symptoms appear, should promptly go to the regular hospital examination and treatment.