Low back pain is a common complaint in outpatient orthopedic patients. At the end of the visit, the doctor will often ask the patient to perform functional exercises for the low back muscles. So what is low back exercise and why is it important? The lumbar back muscle is one of the important structures to maintain the stability of the lumbar spine. Strengthening the exercise of the lumbar back muscle helps to maintain and enhance the stability of the lumbar spine, thus delaying the process of lumbar strain degeneration and effectively preventing the occurrence of acute and chronic lumbar injuries and low back pain. This is especially important for patients who have had acute and chronic lumbar muscle injuries, lumbar myofasciitis, lumbar strain or lumbar disc herniation and are currently in remission to prevent recurrence of the condition. People who are resting in bed or wearing a lumbar brace for treatment due to lumbar pain, the lumbar region is inactive and unstressed, which can cause disuse atrophy and weakness of the lumbar muscles in the long run, therefore, the exercise of the lumbar back muscles should be strengthened more. The method of lumbar back muscle exercise is simple, easy and inexpensive, and everyone can do it by themselves every day. There are basically no adverse effects of other treatments. Exercise can be prone on the bed, go to the pillow, hands behind the back, lift the chest with force, so that the head and chest leave the bed, while the knee joint straight, the two thighs force backward also leave the bed, for 3 to 5 seconds, and then muscle loose rest 3 to 5 seconds for a cycle, this method is commonly known as “swallow fly” or “small swallow fly “; for lumbar muscle strength is weak or obese people, the above method is more laborious, you can use the “five-point support” method of exercise, lying on your back in bed, to pillow bending knees, double elbows and back against the bed, the abdomen and hips up, relying on the shoulders, double elbows and feet which five points to support the The entire body weight for 3 to 5 seconds, then relax the lumbar muscles and put down the hips to rest for 3 to 5 seconds for a cycle. You can choose the right method to exercise according to your actual situation.