A bend in the case of a flash back, indicating that the usual itself lumbar spine has too much strain, strain, bending, sedentary, long standing activities. In addition, the strength of its own lumbar back muscles is very weak, poor protection of the lumbar spine, so now the specific treatment methods are as follows: First, now there is obvious pain, you should rest in bed as much as possible, in the painful places with external blood pain cream, and then with hot compresses, physical therapy to help relieve symptoms. Secondly, after the pain is relieved, you should do the little swallow fly in bed, as well as the five-point support method of lumbar back muscle function rehabilitation exercises to strengthen the muscle strength of the low back. After the above symptoms are completely relieved and disappeared, more sports exercises should be added to avoid sedentary, standing and bending. Third, before doing sports exercise, must do a good job of warm-up exercises, daily life or work, sitting or standing, a posture for a long time should be active activities of the lumbar spine, to reduce muscle fatigue around the lumbar spine.