Before the operation, we should eliminate the nervousness, understand the relevant medical knowledge and correct sexual knowledge, understand the causes of the disease, correctly understand the anatomy and physiological structure of the human body, and understand the harm of excessive foreskin in detail to eliminate shyness, nervousness and fear.

Before the operation, keep local cleanliness, scrape go to the pubic hair and thoroughly clean the operation site. From three days before the operation, it is suggested that the foreskin should be turned over to expose the coronal sulcus and remove scales.

Before the operation, it is necessary to improve the relevant examinations, such as infectious disease screening, blood routine, urine routine, etc., to determine whether there are infectious diseases and abnormal coagulation function, and to carry out corresponding treatment.

Patients with inflammation need to control the infection first, and then operate after the inflammation subsides.

Fasting six hours before operation to avoid vomiting or suffocation during operation.