Bone pain on both sides of the anus should refer to sciatica, which is mostly seen in lumbar disc herniation, sciatic neuritis, pyriformis syndrome and so on. 1. Lumbar disc herniation: it may be caused by long-term stooping and weight-bearing, which often leads to nerve compression and damage, thus causing sciatica, especially when exertion, the pain is more obvious. 2. Sciatic neuritis: it may be an inflammation caused by compression or damage to the sciatic nerve area, which often leads to obvious pain. 3. Piriformis syndrome: it is caused by the sciatic nerve being compressed in the buttocks, which often manifests as pain in the buttocks and is accompanied by radiating pain in the lower limbs. Bone pain on both sides of the anus may also be caused by other reasons, it is best to go to the hospital in a timely manner, differential diagnosis, identify the cause of targeted treatment to avoid aggravation of the condition.