The formation of chronic trauma is a complication of various diseases, and with the high incidence of some chronic diseases, the population with chronic trauma is gradually emerging. Diabetic foot is a complication of diabetes, and the incidence of diabetic foot is increasing along with the increase of diabetic patients. At present, the number of diabetic patients in China has reached 55 million. In the next 3-5 years, it is expected that 15% of these diabetic patients will develop diabetic foot, and in serious cases, they will face amputation, which will significantly affect the quality of life of the patients themselves and increase the burden on their families and society. As China’s population continues to age, the incidence of venous ulcers and pressure sores in the lower extremities is also increasing, increasingly plaguing the middle-aged and elderly population. The number of such patients in Beijing and surrounding provinces is by no means small, and the number of patients with venous ulcers of the lower extremities is increasing, with hospitals receiving 70 to 100 cases each year; while pressure sores are the most common complication for patients who are bedridden for long periods of time due to stroke, fracture, post-operative rehabilitation, etc. As for patients after various cardiothoracic surgical open-heart procedures, internal fixation of bone trauma and trauma repair, cases of poorly healed surgical wounds that do not heal for a long time and form chronic sinus tracts are also common as surgical complications. However, these cases did not attract enough attention from doctors in the past. Patients with chronic trauma are mostly scattered in departments such as endocrinology, general surgery, orthopedics, high-density wards and drug exchange clinics, which mainly treat primary diseases and chronic diseases, so trauma problems are easily neglected or helpless in treatment, and internal medicine can’t be treated and surgery doesn’t love to treat. The pain and helplessness are overwhelming. The current status of treatment for chronic small wounds in China is that many patients do not receive systematic, professional and standardized treatment, and such delayed treatment can easily lead to the expansion and deepening of small wounds, making them more difficult to heal and even forming serious infections, aggravating the deterioration of the primary chronic disease.