The following reasons are common for patients with hip pain after delivery: first, repeated friction between the hip and the bed during delivery and local compression can cause damage to the soft tissues of the hip, and patients will find painful symptoms in the hip when they focus on it after delivery, and the pain is also very obvious when pressed, and the symptoms will gradually disappear after local cold compresses and braking. Secondly, if the patient has lumbar disc degeneration during pregnancy and acute lumbar disc herniation is induced during childbirth, the patient may experience radiated pain in the buttocks after delivery, and usually also has severe lumbar pain and restricted activities, and the lumbar muscles may have spasm and tension. Therefore, postpartum pain in the hip lying flat should be diagnosed and treated promptly, which can bring satisfactory relief to the symptoms.