Objective To analyze the effect of PDCA cycle management nursing on the cosmetic effect of surgical area in patients with benign breast tumor resection. Methods A total of 80 patients with benign breast tumors admitted to our hospital from January to November 2022 were selected as the subjects of study. They were divided into control group and experimental group by random number table method, with 40 patients in each group. The control group was given routine nursing, and the experimental group was given PDCA cycle management nursing. The psychological status, quality of life, nursing satisfaction and cosmetic effect of the two groups were compared. Results The HAMA score and HAMD score of the experimental group were lower than those of the control group at discharge (P