Soft tissue infection is a pathological change caused by the local multiplication and destruction of pathogens such as bacteria after they have invaded the body. Superficial infections without abscess formation, which are usually referred to as cellulitis, can usually be effectively controlled in about 1 week under the control of effective antibiotics. In case of combined formation of abscess or deep infection, incision and drainage, drug change, and antibiotics under the guidance of drug sensitivity test are required, and the course of this disease is longer, taking 2-3 weeks, or even more than 1 month for some patients to heal. And there is a special kind of infection, namely non-tuberculous mycobacterial infection that must be paid attention to, which is mainly present in the soil and water contaminated environment when working in the limb of a puncture wound, the main manifestation of which is chronic swelling with mild pain or even no pain. This condition should be kept on high alert because it is difficult to be controlled with the use of conventional antibiotics and requires effective identification to be controlled.