Left buttock pain may be related to physiological factors such as sedentary activities, or pathological factors such as local trauma, lumbar disc herniation and pyriformis syndrome. 1. Physiological factors: daily sedentary will lead to hip soft tissue and local muscle extrusion, resulting in congestion and edema, stimulation of peripheral nerves causing pain, may appear left buttock pain. 2.Pathological factors (1) Local trauma: mainly due to bumps and falls on the buttocks, resulting in injuries to the soft tissues and local muscles of the buttocks, which may cause pain in the left buttock. (2) Lumbar intervertebral disc herniation: mainly caused by degeneration of intervertebral discs, injuries, abnormal development of lumbar vertebrae, etc. Long-term work at work and heavy manual labor may induce the disease, and pain may occur when the compressed nerves are painful, which may lead to left buttock pain. (3) Piriformis syndrome: mainly caused by the sciatic nerve compression in the region of the piriformis muscle, often showing pain, calf muscle atrophy, and so on, may appear left buttock pain. If the left buttock pain does not get better or there is a significant aggravation trend, it is recommended to consult a doctor in time to find out the cause and standardize the treatment.