The affected area of radiation ulcers is delicate, so avoid sweat stains, whether it is a change of medication or negative pressure treatment, and pay attention to the closed patch when bathing, put up all around before bathing, see water will make the trauma infected, deepen and expand, so pay attention to the transparent isolation film or patch on the bath during treatment, and take it off after bathing, so that the trauma basically can not see water. The chronic ulcers include arterial ulcers, which are common diabetic foot and venous ulcers, and pressure ulcers. Radiation ulcers are soft tissue necrosis in the breast area caused by post-operative radiotherapy for female breast cancer, which is a more difficult type of chronic ulcers to treat through regular debridement and medication change, mainly by negative pressure therapy, and then supplemented by surgery. If the necrotic tissue is large and obvious, the necrotic tissue should be removed by dilation and then treated with negative pressure, and then closed wound surgery should be performed after the whole wound is clean. Radiation ulcers should be treated by a combination of means, is a kind of chronic ulcers, sometimes see the trauma is not big, but long years can not heal, internal necrosis has long been, so more trouble. Nowadays, the treatment means or technology is more advanced, and in recent years, radioactive ulcers are relatively small and relatively easy to treat. Radioactive ulcers will not heal using conventional methods, now there are a variety of functional dressing exchange treatment, the effect is very satisfactory, but the time is relatively long, regular treatment in about 2 months to heal, 1 month to heal less, individual special cases 2-3 months to heal.