Based on our rich clinical experience in laparoscopy, we have gradually developed scarless laparoscopic techniques for the treatment of common diseases in pediatric abdominal surgery with remarkable efficacy, taking a step further in the development of minimally invasive surgery. Types of common diseases: inguinal hernia; syringomyelia; ventral wall hernia; acute appendicitis; ovarian mass; ovarian cyst; mesenteric cyst; large omental cyst, etc.