Allowing children to visit adult intensive care units (ICUs) has been an area of controversy. There is a lack of recent research dealing with visits by children and physicians' views and whether differences exist between the views held by nurses and physicians regarding visits by children. The aim of this study was to describe and compare reasons given by nurses and physicians for restricting visits by children to a relative hospitalized in an adult ICU. This was a quantitative, descriptive multicentre study. Nurses and physicians (n = 291) at 72 general adult ICUs participated, each completing a questionnaire. A majority of the nurses and physicians were positive to children visiting patients in ICU, but they also imposed restrictions. The most common reasons were: severity of the patient's injury (50%); the environment was frightening for the child (50%); the infection risk for the child (36%) and the patient (56%). Children <7 years were restricted more than those >7 years. Nurses were more positive than physicians to visits by younger children. Physicians were more positive to visits if the patient was tired and critically ill/injured or was a friend/cousin. More physicians refused visits due to the fact that children are too noisy for the staff. Risks of negative effects on the children's health by visiting patients were also stated. Nurses and physicians still restrict children's visits to adult ICUs for a number of reasons, and nurses' and physicians' views on children visiting differ and so also the views within each professional group. The differences in views show that the dynamics are complicated and this could be attributed to a lack of a common view of care, which prevents family-centred care that includes children from being practised.