中国中西医结合外科杂志 2022 年 4 月第 28 卷第 2 期 231 internal ligation were selected, patients were divided into infrared group (IR group) and experimental group (L1h group, L4h group, H1h group and H4h group) according to random number table. All patients were treated with basic treatment. The IR group was treated with infrared radiation after dressing change, and the experimental group was treated with different initial temperature and external application wound pain score, the degree of anal edema, the degree of wound exudation score, the days of wound healing and the incidence of eczema were compared within 7 days after surgery. Results In terms of reducing wound pain, there was no significant difference in VAS scores between the five groups on the first day after surgery (P>), and the VAS scores in the H1h group were significantly lower than those in the L1h group at2 to 7 days after surgery (P<), and the VAS score of H4h group was significantly lower than that of L4h group (P<). In terms of relieving anal marginal edema, there was no significant difference 基金项目：上海市进一步加快中医药事业发展三年行动计划 in the scores of the anal marginal edema in the five （ZY(2018-
