Objective To report the surgical procedure of removing renal foreign body by robot-assisted laparoscopic surgery in a child, so as to provide reference for future incidence. Methods and Results A 2-year-old girl was admitted to the hospital for a foreign body in right kidney, which had been found by abdomen X-ray for 1 month. She had been misdiagnosed as having a gastrointestinal tract foreign body, and it was not discharged after conservative observation for more than 3 weeks. Further examination was performed in our hospital, and abdominal computed tomography showed a foreign body in the right kidney. Robot-assisted laparoscopic surgery was conducted at the request of her parents. A foreign body was found in the inferior pole of the right kidney, and was intactly removed. The foreign body was a metal needle. The intra-operative blood loss was less and injury was small, with accurate location. No abnormal findings were noted during a follow-up of 44 months. Conclusion Robot-assisted laparoscopy can be used for pediatric renal foreign body removal, which provides a new method for removing visceral foreign bodies in children.