From day to day there are more and more children diagnosed with ADHD syndrome. ADHD or hyperkinetic disorder is neurodegenerative disorder followed by hyperactivity, impulsivity, and attention deficit. There are three types to differ: hyperactive – impulse type, deconcentrated type and combined type. Lots of children diagnosed with ADHD syndrome are too lively most of the time, always on the move, restless and it is a very hard work to teach them how to behave well, because they feel the constant need to move around. Treatment and help of surroundings leads to significant reduction in difficulties.. The most important role have parents and their approach. Family is one of the most important elements, because positive relations contribute to children´s development. It is important not to label children if they ADHD syndrome diagnosed. One of troublesome difficulties with which children come across is inability to make friends. Because of their hyperactivity and liveliness, child is often discarded from his peers. Therefore, exeptionally important is support of preschool teachers and kindergarten. Preschool teachers with their competency try to use special activities to redirect children attention, stimulate their concentration, improve children behaviour, and include in company. One of the most efficient therapies in treatment of ADHD include psychosocial approaches, whose main task is to change children behaviour. Other most effective therapies are therapeutic therapies, that put the highlight on the importance of children being included into sport and alternative forms of treatment. The aim of this thesis is to alert to difficulties with which children with ADHD face and highlight importance of understanding children and giving support to children.