The Ascaridiasis is a problem of public health in the most countries located in the third world, one of the most common presentations of this parasitism is the erratic ascariasis, which involves the biliary ways and the pancreatic conduit, although most of the research works report about the low incidence of this pathology in kids. In the present Article we report five cases of kids with a manifestation of ascariasis in common bile duct, four of them are the most interesting cases due to the presence of multiple biliary parasites. Once a revision made of paraclinical reports of these five cases and the characteristics of the E.R.C.P endoscopic procedure, we are showing the advantages of this method for the diagnostic and treatment of this pathology at the same time it is exposed to the readers a brief actualization of this infestations.