Sciatica is a syndrome characterized by pain in the area innervated by the sciatic nerve. It is a clinical symptom rather than a separate disease. Sciatica can be divided into primary and secondary. Primary is rare, i.e. sciatica; secondary is common, which is local and surrounding tissue lesions involving the sciatic nerve. Common ones include lumbar disc herniation, lumbar bone hyperplasia, inflammatory diseases of the sacroiliac joint, and piriformis muscle contracture. Typical manifestations are pain in the waist and buttocks on one side, which radiates to the back of the thigh, the posterior and lateral side of the calf, and the lateral side of the foot. Walking and changing body position can aggravate the pain, and the raising of the affected leg is limited when lying flat. The cause of this is that in daily life and work, some people often have long-term improper waist force, excessive force, incorrect posture or position. The high-risk groups are white-collar drivers who sit for a long time, shopping guides and teachers who stand for a long time, people in special physiological periods, or people with back injuries, etc.