Lumbar muscle spasm may be caused by overwork, calcium deficiency, cold, lumbar disc herniation, etc. It can be relieved by keeping warm, calcium supplement, rest, and medication such as muscle relaxants. 1. Keep warm: If the patient’s lumbar muscle spasm is caused by cold in the lumbar region, he should pay attention to the warmth of the lumbar region, and can take hot towels to apply warm compresses on the cramped area or take a hot bath to relieve it. 2. Calcium supplement: if the affected limb lumbar muscle spasms are caused by calcium deficiency, you should pay attention to a balanced diet and nutritional matching in your daily life, and consume more food with higher calcium content, such as eggs, milk, and so on. 3. Rest: If the patient’s lumbar muscle spasms are caused by long-term strain, he should pay attention to reducing the burden on the waist, refrain from engaging in physical labor for a short period of time, avoid strenuous exercise, and pay attention to rest. 4. Drug treatment: If the patient’s lumbar muscle spasm is caused by lumbar disc herniation, then you can take drugs such as chlorzoxazone to make the muscle relaxation. Adverse effects of this drug may include dizziness and nausea. It can also be treated with acupuncture and other therapies. Lumbar muscle spasm may be caused by other factors, the patient should promptly go to the hospital for examination and consultation, the above drugs should be taken under the guidance of a physician.