Core stability of the spine is a new concept introduced in the West in the 1980’s. Simply put, it is an exercise method to strengthen the dynamic balance of the joints of the human spine through various training methods, initially applied in professional sports and athletics, and then with the gradual advancement of human microanatomy and biomechanics research, this concept formed an independent theory and slowly came to the attention of the Western medical community. In recent years, a variety of treatments have been derived from this and applied to the treatment of spinal disorders. Let’s start by understanding the spine. Simply put, the spine is a chain of more than 20 vertebrae and intervertebral discs, ligaments and other tissues that form a joint chain that supports the entire torso. When the body is at rest, the vertebrae of the spine are not displaced relative to each other, and the stability of the spine relies on bony structures and ligaments to maintain; when the body is in motion, the spine constantly changes its shape, whether forward flexion or backward extension, the vertebrae of the spine maintain their relative positions. This dynamic stability requires not only ligaments, but also muscles to maintain. Why should we emphasize the stability of the spine? From the point of view of the appearance of the structure, the human body is the center of the spine to the surrounding radiation; from the point of view of the movement pattern, all the movements of the human body is generated by the trunk, through the shoulder and hip joints, and then transmitted to the limbs, so the most fundamental core is the spine. When the core stability of the spine decreases, the body does movements, the vertebrae of the spine will appear abnormal displacement, which leads to biomechanical changes in the spine, affecting the completion of the movement. The core stability of the spine relies on muscles to maintain, and some studies have confirmed the existence of such a class of muscles on both sides of the human spine, which are in an advanced state of contraction before doing limb movements (limb muscle contraction). Researchers found through microanatomy that these muscles are in the deeper layers of the spine on both sides, connecting the vertebrae, short in length, small in contraction moment, long-lasting in strength, and preexcited with the purpose of maintaining spinal stability in advance before doing the action. This is called the core muscle group. Representative muscles are multi-cleft muscle; compared to this, there is another class of muscles, in the shallow layer of the body, in the moment of doing action to produce explosive force, so that the trunk to complete the displacement, called the peripheral muscle group. The representative muscles are the erector spinae and lumbaris major. These two types of muscles coordinate with each other, together to complete the body’s daily actions of all kinds. The human body is an organic whole, and this view can be reflected in the movement patterns of the human body. When the body has the intention to do limb movements, the brain sends electrical signals, so that the core muscles on both sides of the spine pre-excited contraction to maintain the core stability of the spine, and then excited limb muscles to complete the action, just like the lifting truck work mode, first put down the kickstand, fixed chassis, and then extend the lifting arm work. Therefore, if the core muscle group’s ability to pre-excite contraction decreases, it leads to a decrease in the stability of the spine, the power transmitted to the extremities also decreases, and the entire movement pattern changes. However, the body has its own compensatory capacity, so if the core muscle group function decreases, the work of maintaining spinal stability is done by the peripheral muscle groups, thus maintaining the normal movement pattern. When the core muscle group function continues to decline, the peripheral muscle group continues to compensate, the long-term compensation of the peripheral muscle group in a state of high load, or even more than the load, a state of loss of compensation, muscle ischemia and hypoxia, resulting in lactic acid accumulation, the formation of pathological symptoms. Furthermore, peripheral muscle group decompensation directly leads to decreased spinal stability and changes in spinal biomechanics during daily activities, with compensatory displacement changes in various vertebral joints, intervertebral discs and other tissues, resulting in spinal pathologies such as so-called disc herniation. In daily cases of neck and back pain, it is not difficult to find many chronic patients who complain mostly of chronic soreness and weakness, worse symptoms after prolonged standing and sitting, and no specific discomfort, and improvement after conservative treatment but recurrent symptoms. In such cases, it has been confirmed that they have decreased preexcitation of the core muscle groups, indicating a decrease in core spinal stability. Symptoms can improve after applying conservative treatment and relieving the high load state of the peripheral muscle groups, but the compensatory pattern remains, so that the symptoms recur after a period of time. Therefore, for this type of cases, we can choose another type of treatment by exercising the core muscles to enhance the core spinal stability and indirectly relieve the high load on the peripheral muscles. The core muscles of the spine, the body’s natural iron jacket, act like a waist girth, protecting the spine from injury. How to improve core muscle group function? There are many such methods, the principle is to stabilize through instability training, this principle can not be changed. How to understand this principle? In fact, our muscles are very lazy, when they do not work, then in a state of rest, long-term rest will make the muscles themselves to reduce the ability to meet the requirements once the work again. To change this state will have to make the muscles work by constantly inducing. The above mentioned limb movement, the spinal core muscle group preexcited contraction, so if we fix the limb on an unstable plane, such as the body lying flat, fix the legs on the elastic sphere, the limb constantly shaking, change the posture, you can activate the spinal core muscle group constantly preexcited contraction, thus improving the function of the spinal core muscle group, enhance core stability. Why does the function of the spinal core muscle group decline? Because when the body is at rest for a long time, spinal stability relies on bony and ligamentous structures to maintain, the core muscles rest and do not participate in the work, such a situation accumulates over time, the core muscle group preexcitation role degenerates, it will cause its function to decline. When the body suddenly changes posture, such as sitting up after a long time, because the core muscle groups can not maintain the stability of the spine, peripheral muscle groups at the same time to take into account the stabilization of the spine as well as to generate the force to change the posture, there may be excessive load, directly leading to muscle damage. Therefore, prolonged standing and sitting is only an indirect cause of spinal muscle strain; the direct factor is a decrease in the function of the core spinal muscles. In the past, the treatment of spinal disorders was generally analyzed from a bony perspective by correcting the relative positions of the vertebrae to solve the problem; now, after understanding the core stability of the spine, we are able to analyze spinal disorders from another perspective and make a more rigorous diagnosis and targeted treatment.