Lumbar muscle stiffness and soreness and tightness, may be the waist for a long time to maintain the same position and other physiological factors; may also be suffering from lumbar muscle strain, lumbar disc herniation and other diseases. 1. Physiological factors: if the waist for a long time to maintain the same position, sedentary, long standing, lumbar cold for a long time, may lead to lumbar muscle spasms and stiffness and soreness and tightness, may also be accompanied by lumbar pain symptoms. Generally can be relieved after rest. 2. Lumbar muscle strain: If the lumbar acute sprain or bending too much weight, may induce lumbar muscle strain, resulting in patients with lumbar muscle stiffness, soreness and tautness, pain may also radiate to the buttocks. 3. Lumbar disc herniation: disc degeneration, lumbar sprains and other reasons may induce lumbar disc herniation, discs eat and drink compression of the muscles around the lumbar vertebrae, so that the patient’s lumbar muscles are stiff, sore and taut, and may be accompanied by radiating pain in the lower limbs, scoliosis and other symptoms. If the lumbar muscles are stiff, sore, swollen and taut, it is recommended that the patient go to the hospital for a relevant examination to clarify the cause of the disease and receive treatment as soon as possible after eliminating physiological factors.