For patients with back muscle cramp-like pain, there are three main causes: First, calcium deficiency, especially in adolescents and the elderly during the growth period, can lead to muscle spasm in the back after calcium deficiency, and this spasm can lead to back muscle cramp-like pain. Second, see the injury, especially the muscles of the back suffered strain injury, edema or external blow edema, will also lead to back muscle cramp like pain symptoms. Third, see the strain, especially the regular low head, bending activities, it is easy to cause the back muscles, fascia excessive force strain, causing spasm, edema, especially after the cold, spasm, edema will be particularly obvious, will cause the back muscles have cramp like pain symptoms.