I. 32P treatment mechanism 32P releases pure beta rays during the decay process, which act on the proliferating tissue cells, causing their denaturation, nuclear consolidation and cell membrane disappearance into syncytized cells, thus reducing the synthesis and deposition of tissues and achieving the treatment purpose. The cure rate of simple capillary hemangioma can reach more than 98%, and the cure rate of cavernous hemangioma with internal irradiation treatment can reach more than 86%. The cure rate of nevus is more than 80%. 2.Keloid scar: the cure rate of patients below 1.5cm of skin with direct dressing treatment is 75.8%, and the efficiency rate is over 95%; the cure rate of patients above 1.5cm of skin with surgical excision with dressing treatment is 100%, and the recurrence rate is about 5%. 3.Preventing the formation of scar after surgery: it is applicable to all keloid and beauty lovers and is carried out in the near future after wound healing, with an efficiency rate of nearly 100%. 4.Limited neurodermatitis: the cure rate is about 65%, the effective rate is about 80%, and the recurrence rate is about 10%. 5, limited (persistent) chronic eczema: cure rate of 51%, the efficiency rate of 85%, the recurrence rate of about 25%. 6, epidermal redundancies (basal cell papilloma, etc.): more than 90% of redundancies can be shed by a course of irradiation, after two treatments, the cure rate of up to 100%. 7, other: corns and calluses, etc. According to the shape and size of the lesion surface, 32P special dressing device can be made. Patients can apply the dressing at home according to the schedule provided by our department. This method is simple and easy for patients to accept, which overcomes the trouble of patients needing to go to the hospital repeatedly in the past, and because the 32P dresser is closer to the lesion skin, the shape is consistent with the lesion tissue, so the treatment effect is better than the conventional method in the past. Safety 1. For patients: no pain, no obvious damage to the surrounding normal skin and deep tissue. A few patients may produce local blisters, pigmentation or loss, mostly related to excessive dose or patient’s sensitivity to radiation. This can be avoided by strictly following medical advice. 2.To others and the environment: the penetration of beta ray of 32P dresser in the air is less than half a meter, and the protection can be achieved by sandwiching it in an ordinary book.