There are many reasons for pain in the left hip joint after being exposed to cold. The localized muscles of the hip joint are stimulated by cold, which leads to muscle spasm and produces some aseptic inflammation, causing pain. For this kind of patients only need to give local hot compresses, microwave, baking lamp, etc., the symptoms are quickly relieved, usually without medication. In addition, acute and chronic synovitis of the hip joint caused by various reasons is also prone to pain after exposure to cold. This kind of patients as far as possible brake rest, at the same time with oral non-steroidal anti-inflammatory drugs, symptoms will gradually improve. In addition, patients with hip impingement syndrome, acetabular labral injury, osteoarthritis of the hip joint may also experience pain in the hip joint after exposure to cold. These patients should pay attention to keep warm and strengthen the functional exercise of the gluteus medius muscle in order to stabilize the hip joint. If the condition recurs, arthroscopic surgery is necessary.