Physiological causes of buttock pain in late pregnancy can be relieved by changing position, physical methods, etc., while lumbar spine disease, hemorrhoids and other causes require symptomatic treatment with medication, and surgical treatment if necessary. 1. Physiological reasons With the increase of pregnancy weeks, the pregnant woman’s body weight-bearing will gradually increase, in the late pregnancy due to the enlarged uterus and fetus on the pelvic floor and pelvic pressure, may appear buttock pain. To avoid prolonged sitting, or choose the right cushion can relieve pain, but also side lying position, can also be appropriate to relieve pain. Can also be given under the guidance of the doctor with moderate strength massage of the lumbosacral region and local muscles, local hot compresses and other methods can be loosened local muscle stiffness and spasm of the state, can also be appropriate to relieve pain. 2. Pathological causes (1) Lumbar spine disease: when there is a combination of lumbar spine disease before pregnancy or caused by lumbar spine disease during pregnancy, it can be aggravated with the increase of lumbar spine weight-bearing with the increase of pregnancy weeks, resulting in lumbar pain, and it can even be radiated to the buttocks to cause pain. Need bed rest, reduce activities and standing, if necessary, follow the doctor’s advice to give ibuprofen and other drugs to relieve pain treatment, when the symptoms are serious, the need for postnatal surgical treatment. (2) hemorrhoids: pregnancy can cause or aggravate hemorrhoids, and cause pain in the buttocks, clearly diagnosed by rectal fingerprinting, should eat more vegetables, less spicy and stimulating food, if necessary, follow the doctor’s advice to give lactulose and other drugs to correct constipation and alleviate the pain, the serious cases can be surgically removed after delivery. When late pregnancy pain in the buttocks need to go to the hospital, and under the guidance of the doctor to give appropriate methods of symptomatic treatment, avoid self-medication.