With the prevalence of various chronic diseases increasing year by year, chronic wounds such as decubitus ulcers, diabetic foot, chronic ulcers and other chronic wounds associated with them are also showing a high incidence. Under the tide of aging, the elderly have become the main group of chronic wounds due to various reasons such as their own nutrition and diseases. Data show that the city over 60 years old long-term bedsore patients reached 60,000, diabetic patients with a disease duration of more than 10 years, diabetic foot incidence rate of up to 45%. Once the chronic wound appears, the light is to affect the quality of life, the heavy is easy to cause systemic infection and cause death. For the domestic treatment of the status quo, the contradiction between the medical needs of traumatic diseases and the lack of services is very prominent, many patients lack of understanding of burns can treat diabetic foot, decubitus ulcers, etc., diabetic foot patients in the endocrinology, orthopedics and traumatology to seek symptomatic treatment, did not get the systematic treatment. At the same time, for chronic hard-to-heal wounds, the clinic also lacks some new diagnostic and treatment techniques, so it has to copy the general surgery wound dressing experience. Power Hospital has accumulated decades of experience in the treatment of wounds. Today, the Clinic for Difficult-to-heal Wounds mainly focuses on all kinds of difficult-to-heal wounds, especially skin avulsion wounds caused by various types of trauma, difficult-to-heal wounds caused by chronic osteomyelitis, bedsores commonly seen in the elderly, and diabetic foot (commonly known as old rotting foot), etc, to make a correct assessment and provide targeted treatment programs. Mr. Shen, who is over 80 years old, has suffered from hypertension and diabetes for more than 30 years. 3 years ago, he found that the wounds of his right big toe had not healed for a long time after breaking, and he was discharged from hospital after 3 weeks of hospitalization by controlling his blood glucose, implanting a stent into his right anterior tibial artery to dilate the blood vessels, and undergoing waterjet debridement of the wounds, negative-pressure suction, symptomatic antibiotic treatment, and autologous skin grafting. The process of resolving chronic wounds requires both specialized treatment techniques and long-term patient care with dressing changes. For some complicated wounds that are difficult to heal, patients often have to go through several difficult debridement and reconstructive surgeries with daily medication changes until the wounds gradually heal, so patients have to actively cooperate with healthcare professionals for early healing.