The common reasons for the pain inside the buttocks are as follows: 1, due to acute injury of the buttock muscles or acute attack of chronic strain injury of the buttock muscles, resulting in local congestion and edema, inflammatory cell infiltration to produce aseptic inflammation, resulting in irritation and severe pain. 2, can be seen in the lumbar spine disease, such as lumbar disc herniation compression of the sciatic nerve root of the lower limbs, resulting in severe pain in the buttocks, and its 3, can be seen in the perianal diseases, such as hemorrhoids, perianal abscess, etc. Due to infectious stimulation of inflammation leading to the buttocks inside the emergence of intense pain in the soft tissues. If you can get medical treatment in time, you should go to the hospital for detailed examination. If you can’t get medical treatment in time, you can take a brake to rest, support symptomatic treatment and observe 3-5 days to decide whether to go to the hospital for consultation.