Objective: To study the clinical effect of modified circumcision in the treatment of phimosis and excessive foreskin. Methods: 110 patients with overly long foreskin or phimosis were divided into experimental group and control group by random number table method, with 55 cases in each group. The experimental group was treated with modified circumcision, and the control group was treated with traditional manual cutting and suture. Then the clinical effects of the two treatments were compared. Results: Two different surgical procedures were performed. During the operation, the blood loss of the experimental group was less than that of the control group; the operation time and wound healing time were shorter than those of the control group; after the operation, the incidence of related complications in the experimental group was 14.55%, which was significantly lower than For 25.45% of the control group, the clinical treatment effect was obvious, and the difference was statistically significant (P<0.05). Conclusion: The clinical effect of modified circumcision in the treatment of patients with phimosis and excessive foreskin is good. Compared with the traditional manual cutting and suture treatment, it not only has the advantages of simple operation and clinical application, but also benefits the rehabilitation of patients. Rehabilitation time reduces the incidence of postoperative complications. It is an ideal treatment plan for this type of disease in the current clinic, and it is worthy of popularization and application in general surgery and reproductive surgery.