The aim is to describe impact on health of unintentional injuries (E800-E949, CIE-9) (V01-X59, Y40-Y86, Y88, Y89 CIE10) in terms of mortality and morbidity and to make certain recommendations regarding information systems. Transport, including occupational transport, is the activity that causes highest mortality, 5,920 in 2002. However, the overall number of deaths for the rest of circumstances where injuries occurred (falls, burns, drowning and others) rises to 5,032, the above being injuries that take place where we live and work, that is domestic, leisure and workplace settings. For the severity of road traffic injuries data are provided from the analysis of the Minimum Basic Data Set after Hospital Discharge in Spain. Differences are shown between severe injuries reported by the Traffic General Directorate (26,566) and hospital discharges for the same year (40,174). For leisure and domestic injuries, Primary Health Care sentinel networks are those producing the most information about the situation, particularly in the field of childhood injuries. The consultation incidence for this cause fluctuates between 931 and 1118 in the under 14s and between 1306 and 1971 in the under 5 s. For injuries occurring in the workplace the best information is provided by specific registry systems. Their incidence was 75.5 for the year 2000 and 70.5 in year 2002 for every 1000 workers paying national insurance.