5 | CONCLUSION
Each patient with DNSI develops individualized treatment plan according to his own situation. Conservative treatment and surgical treatment are feasible treatment plans, which can complement each other. In view of the pyogenic cavity aerobic therapy proposed by us, it has been proved that it is a good treatment method for patients with DNSI and incision and drainage of pus, and the operation process is simple. Combined with negative pressure drainage, it shortens the treatment time of dressing change, reduces the physical and psychological pain of patients. The method not only reduces the workload of clinical doctors, but also reduces the risk of rupturing large blood vessel rupture and damaging important nerve structure during dressing change. The materials used in the treatment process are common clinical materials. Therefore, we believe that this method is worthy of clinical promotion. Our team has summed up the experience, but many of the mechanisms are not yet fully clear, and need to be further studied and verified.