In the past, there were various theories about chronic soft tissue injury, but chronic soft tissue injury is still a large category of diseases that cannot be cured for a long time, and trying to find out the root cause of such diseases has been the goal of the medical profession at home and abroad. Acupuncture medicine systematically puts forward the concept and scope of chronic soft tissue injury, and through the study of various forms of soft tissue injury and pathological change process, it is believed that the root cause of chronic soft tissue injury is the imbalance of dynamic balance of human body, and there are four basic pathological factors that cause the imbalance of dynamic balance, namely adhesion, contracture, scar and blockage. For the clinical widespread but lack of effective treatment of chronic soft tissue injury diseases, acupuncture medicine after long-term clinical practice and observation, the etiology of chronic soft tissue injury has a new understanding: First, redefine the scope of soft tissue. In the past, domestic and foreign medical theory limited soft tissue to the motor system, while acupuncture medicine believes that soft tissue includes all tissues of the human body except the only hard tissue (bone tissue), because they have similar mechanical properties, and the pathological change process of their injury also has the same law, which is a major breakthrough in the theory of soft tissue injury. This is a major breakthrough in the theory of soft tissue injury. It has important clinical guidance significance, changing the past treatment ideas and methods for chronic diseases of visceral tissues and organs, and finding an effective method for the treatment of such persistent and chronic visceral tissue and organ diseases. Second, to clarify the concept of chronic soft tissue injury. Connotation: After soft tissue injury; in the process of treatment and self-repair; new pathogenic factors generated under specific conditions, resulting in the occurrence of new chronic soft tissue injury-like diseases. Extent: chronic soft tissue injury is a kind of chronic disease that is difficult to heal, involving internal and external gynecology and pediatrics in various disciplines. Third, the various forms of soft tissue injury are proposed. The forms of soft tissue injury include violent injury, accumulative injury, emotional injury, fatigue injury, aggressive injury, self-weight injury, surgical injury, lesion injury, environmental injury, and functional injury. This greatly broadened our vision of chronic soft tissue injury and improved the understanding of the nature of many chronic diseases. Fourth, for the first time, the pathological process of soft tissue injury: injury → (biophysics) → changes (fracture displacement, bone misalignment, tendon out of the groove) → mechanical state changes → soft tissue organs are damaged → cause extrusion, stretching, relaxation → resulting in a large number of cell rupture necrosis, tissue exudation → become a foreign body in the body → stimulate the surrounding tissue → cause pain → biochemical changes (bradykinin, 5-hydroxytryptamine (changes in the content of chemical substances such as bradykinin, 5-hydroxytryptamine) → the body through the role of the neuroreflex system, body fluid regulation system → produce changes in the physiopathological process (the damaged body tissues to be repaired, disturbed physiological function to be restored) → due to the protective mechanism of the relevant tissues in the diseased area in a state of alertness and braking → resulting in scarring, adhesions, contractures, blockage → the formation of new pathological factors. Fifth, it is believed that the underlying cause of chronic soft tissue injury diseases is the imbalance of the dynamic balance of the human body. The human body’s tissues and organs, in a specific range of time and space, can move freely is called dynamic balance, and the opposite is called dynamic balance disorder. There are four types of pathological factors that cause dynamic equilibrium disorders, namely adhesions, contractures, scarring and blockages. Sixth, after various forms of damage to our internal organs, in the process of self-repair of the body, the final result is also adhesions, contractures, scarring and blockages, forming new pathological factors, which also lead to the dynamic equilibrium disorders of the internal entities and the dynamic equilibrium disorders of the fluids. Therefore, the essence of chronic injurious diseases of the viscera and chronic soft tissue injurious diseases of the motor system is the same. The above new understanding is confirmed by the study of experimental research on soft tissue tension pain, the research and application of acupuncture medicine in pain departments, and the effect of acupuncture therapy on plasma thromboxane B2 and 6-keto-prostaglandin levels in rabbits with L3 transverse synovial syndrome. The treatment of chronic soft tissue injury diseases under the guidance of this understanding has achieved very good clinical efficacy and raised the understanding of chronic soft tissue injury to a new level.