A survey of the frequency of postoperative vomiting in children was conducted over a two-month period. Completed questionnaires were obtained for 1183 patients. The important findings were a lower incidence of vomiting in children under three years of age and a significantly increased incidence of vomiting in patients premedicated with paparveretum and hyoscine. This clinical review highlighted areas where improvements could be made, particularly in the management of patients who vomit frequently. It also provides information which can be used for setting up more detailed controlled studies.