This is a study about the current status of knowledge and level of insight in treatment possibilities of pediatric urological diseases in daily practice of Dutch general practitioners (GPs). A questionnaire was mailed to GPs with questions concerning the structure of their medical practice, the localization, the received education in pediatric urology and knowledge of this subspeciality. Also, questions were asked about their current knowledge and first choice of treatment for maldescensus testis, urinary tract infections, enuresis nocturna and congenital abnormalities. The 995 forms that were returned, representing 1,457 GPs, are discussed. New developments in diagnostic procedures and treatment possibilities should be reflected in the exchange of information between GPs and (sub)specialists. However, before changes can be realized, the current knowledge and opinions should be known. This study investigates the current opinion of GPs of different pediatric urological diseases. Additionally, the incidence and current state of the art in diagnosis and treatment are discussed.