The literature has indicated that the children population represents the majority of people who use mental health services. In this study, the objective is to characterize the profile of the children population who has looked for a mental health service in the town of Itajaí from 2002 to 2007. Data were collected from the documents of this population who attended the two mental health services.This study is a documentary, exploratory and descriptive one. The most frequent mental problens (28, 7%) of the cases were. Déficit of Attention and the Disruptive Behaviour, in this category the Deficit of Attention/hyperactivity, was the most frequent. The problem about behaviour, (13,3%) of data, are the relationship problems. Based on these data, it is extremely urgent to analyse and rethink Public Social Policies in the prevention of mental problems which affect the children population.