Lumbar muscle weakness is mainly due to lumbar muscle strain, lumbar spine instability, calcium deficiency, fever, tuberculosis and immune diseases, etc. It can usually be cured through conservative treatment, medication, surgery and rehabilitation exercises. 1. Lumbar muscle strain: Due to the existence of injury and strain in the lumbar muscles, the muscle fibers become congested, edematous, and have an inflammatory reaction, which can limit the function of the muscles. Patients with lumbar muscle strain will have more serious pain and symptoms of lumbar muscle weakness when they are active. Treatment requires physical therapy and hot compresses, and oral non-steroidal anti-inflammatory drugs such as ibuprofen can be taken. 2. Lumbar spine instability: including chronic degenerative osteophytes, lumbar disc herniation and lumbar spondylolisthesis lead to lumbar vertebrae instability, in the force or make strength will also cause lumbar weakness symptoms. Anti-inflammatory and pain relieving medications such as Loxoprofen are needed. Serious conditions require surgical repositioning and internal fixation. 3. Calcium deficiency: Decreased blood calcium can lead to muscle weakness and lumbar muscle weakness. Calcium and vitamin D can be supplemented as soon as possible. 4. Fever: Generalized fever may cause lumbar muscle weakness due to generalized muscle weakness. Cooling and anti-infection treatment are needed. 5. Tuberculosis: systemic diseases or accompanying symptoms, such as tuberculosis infection, will produce systemic toxicity symptoms, and will also appear in the waist weakness. 6. Immune diseases: autoimmune diseases can lead to neuromuscular junction transmission disorders such as myasthenia gravis, the general application of the hormone methylprednisolone, anticholinesterase drugs such as neostigmine, strengthen the nutrition, muscle weakness to improve the lumbar lumbar muscle function training. Lumbar muscle weakness is recommended to actively consult a physician under the guidance of treatment.