UNLABELLED Gastroesophageal reflux (GER) is a common disease in children less one year old. It is present around 10% of unselected infant population. 40-50% have abnormal 24 h pH monitoring. An early diagnosis and treatment should be done in order to avoid complications. AIM To establish the consensus for the diagnosis and treatment of children with GER, to rule out similar diseases avoid the use of unnecessary drugs and the secondary side effects as well as unnecessary surgery. METHOD The consensus was done with the participation of general pediatricians, pediatrics gastroenterologist, pediatric surgeons, radiologist and endoscopist. An initial paper was done by pediatric surgeon and pediatric gastroenterologist who submitted to the rest of participants. Second stage: the paper was review through E-mail for all participants who send their suggestions and modifications. A new paper was done and discussed by medical and surgery area. During the Congress of Pediatric Surgery, in an open session was discuss again with the participation of the main authors and all the audience present. Finally, a paper was done and review for the main authors.