Lymph node metastasis from perineal tumors including penile cancer, scrotal Paget’s disease, urethral cancer and other malignant tumors usually first metastasize to the inguinal lymph nodes. Ilioinguinal lymph node dissection is the main means to treat lymph node metastasis in the inguinal region. Traditional ilioinguinal lymph node dissection requires an incision of about 500px on each side, and due to the large incision, the blood supply of the skin is easily affected, and many patients suffer from skin infections, skin necrosis and other complications, which prolongs their hospitalization and affects the quality of life after the operation. In addition, the huge incision also affects aesthetics. Recently, scholars at home and abroad have reported laparoscopic ilioinguinal lymph node dissection, which largely reduces postoperative complications such as skin necrosis and achieves the same results as open surgery. Among them, laparoscopic ilioinguinal lymph node dissection has both cis and retrograde routes. Retrograde is from the distal part of the thigh, sweeping from bottom to top. The retrograde route is from the distal part of the thigh, from top to bottom, while the retrograde route is in the abdomen, from top to bottom. At present, most centers adopt the retrograde sweep method, and there are several advantages of retrograde sweep: 1, retrograde laparoscopic ilioinguinal lymph node dissection requires fewer operative holes, if only retrograde inguinal lymph node sweep, as long as 3 holes are sufficient, if need to carry out pelvic lymph node sweep, can be added at any time to 4 holes or 5 holes, but the overall more minimally invasive than retrograde 6 holes. 2, retrograde sweep may be at the same time Expand the sweep to the peri-iliac vessel lymph nodes. When the inguinal lymph nodes are found to be positive, peri-iliac vessel lymph node dissection is required. As long as the Trocar is punctured into the abdominal cavity, the peri-iliac vessel lymph node dissection can be continued, while the retrograde dissection needs to be re-drilled. Therefore, based on the above two points, we believe that paracentesis laparoscopic ilioinguinal lymph node dissection is operationally superior to retrograde laparoscopic ilioinguinal lymph node dissection. In the current cases in our center, the results were good, no complications such as flap necrosis and lymphatic leakage occurred, and it is a better surgical method for treating lymph node metastasis of perineural tumors.