This is a randomized controlled and non-inferiority trial in comparison of intraperitoneal laparoscopic radical prostatectomy without drainage tube between intraperitoneal laparoscopic radical prostatectomy with drainage tube in the safety in men with a localized prostate cancer.

This trial is a prospective, single-centre, randomized controlled, and non-inferiority study in which all men with localized prostate cancer. This study aims to determine whether intraperitoneal laparoscopic radical prostatectomy without drainage tube is non-inferior to intraperitoneal laparoscopic radical prostatectomy with drainage tube in the safety in men with a localized prostate cancer.

Inclusion Criteria:

1. age: more than 18 years old, less than 85 years old;
2. Patient who pathologically diagnosed with prostate cancer and plan to undergo radical laparoscopic surgery for prostate cancer;
3. fully understand the clinical trial protocol and sign the informed consent;

Exclusion Criteria:

1. patients with surgical contraindications who cannot accept surgery;
2. patients with non-laparoscopic radical resection of prostate cancer;
3. patients with previous pelvic radiation therapy and complicated abdominal surgery;
4. patients judged by the investigator to be unsuitable to participate in the clinical trial;