Hip joint pain may be caused by acute injury, hip impingement, arthritis, femoral head necrosis and other factors. 1. Acute injury: for example, external force strikes, resulting in localized damage to the hip joint, which will cause joint pain, and may be accompanied by symptoms such as swelling and restricted movement. 2. Hip impingement: it may be related to acetabular dysplasia, excessive exercise and other factors, which can lead to obvious pain in the hip joint area, and also accompanied by joint popping, and in severe cases, it will lead to hip joint activity limitation. 3. Arthritis: such as osteoarthritis, rheumatoid arthritis, gouty arthritis, etc., which may cause pain in the hip joints, and there may be redness of the skin of the hip, swelling, and morning stiffness of the joints. 4. Necrosis of the femoral head: it may be related to trauma, prolonged alcohol consumption and other factors, which usually causes obvious pain in the hip joint area, especially in the groin area, accompanied by muscle spasms and limited activities, and can cause disability in severe cases. Hip joint pain, and with other abnormal manifestations, should go to the orthopedic department of the hospital for examination and treatment in a timely manner, to avoid delaying the condition.