Universal access to information is a major objective of the society and can be easily done through computers. Current research purpose was to highlight features of the computer activity of children, raised in the opinion of parents. The study included the questioning of 520 parents. The results show that most parents have insufficient information about the computer activity of children and the consequences that may arise as a result of improper activities. A large number of children (95.3%), which work much time on the computer, are tired, exhausted, angry, excited, aggressive, refused to stop work, have stinging or eye fatigue.