From a physiological point of view, the stability of the lumbar spine is maintained by two interrelated systems, the spine itself and the muscular system associated with it, the former being the passive stabilizing system and the latter the active stabilizing system, and pathological changes in either system may cause lumbar instability. Because this lumbar instability is a secondary, degenerative lesion, it is common for patients to have weakness of the lumbar back extensor muscles in clinical practice. The imbalance in lumbar back muscle strength results in a biomechanical imbalance in the lumbar region and produces low back pain. By training the core muscles, the stability, balance and coordination of the patient’s lumbar spine can be increased, and then the incidence and recurrence of chronic low back pain can be reduced. Core muscles: The so-called core muscles refer to the important muscle groups located in the front and back of the abdomen around the torso, responsible for protecting the stability of the spine, the transversus abdominis, pelvic floor muscles and the lower back muscles in this area. Simply put, these are the muscles of the low back in the trunk area. The goal of exercise therapy is to increase the muscle strength of the core muscles of the low back to provide a dynamic stabilization of the degenerating intervertebral joints. Low back core muscle training can relieve low back pain for the following reasons: the direction of intervertebral joint movement during low back extension is opposite to the direction of lumbar forward flexion activities done in daily life, which avoids the stretching strain on the back extensors and lumbar ligaments caused by lumbar forward bending movements; low back extension exercises and low back extensor exercises can maintain a straight back posture, reducing the pressure within the intervertebral discs and reducing further damage to the discs; low back exercises Improve the blood circulation of the low back, so that the accumulated inflammatory pain-causing substances in the low back can be removed more quickly, thus effectively relieving pain. Simple exercise methods: 1, “arch bridge” exercise: supine position, both knees flexed, bend the knees at the same time upward waist, hips raised from the bed, hold 5 to 10 centimeters, restore. Require 10 seconds, 10 on one side. 2, “flying swallow point water” movement: prone position, hands behind the back, limbs and chest up at the same time, leaving the bed, restore. Requirement to hold for 10 seconds, do 10. 3, “side bridge” exercise: use the same side of the forearm and the outside of the foot as a fulcrum, support the body, keep the body straight, relatively the most difficult. Require 10 seconds, 10 on one side. 4, “flat support” exercise: the body into a straight line, with toes and forearms for support, abdominal muscle contraction to maintain 10 seconds, and then relax, pay attention to the whole process do not hold your breath. Requirements 10 seconds, 10. 5, “cross-support” movement: this action, is to use the opposite side of the hands and feet as support, from the elbows and knees as support for the kneeling posture, extending one side of the hand and the other side of the foot, keep the level, this posture requires the body level, look ahead. Hold for 10 seconds and do 10 of them. The above actions for a group, a total of at least three groups to do, the intensity of their own sweat and not too tired for the premise that you can do two or three times a day, as long as it is not too fatigue.