The research goal was to examine preeschool teacher´s competence for working with ADHD- chidren, the way of work and activities which are carried out with the child and involvement of professional associates in the preschool institution. The survey was conducted on 59 respondents with different years of experience in preschool, 83,1% of whom had a child with this type of difficulty. The results have shown that preeschool teachers not fully recognize the ADHD symptoms mentioned, but perform very good activities and try to include all children in their interaction and activities. Hyperactivity Disorder and Attention Deficit/ Hyperactivity Disorder is a very wide diagnosis that covers many symptoms, but the basic characteristic ist he child´s discomfort, the need for activity, the constant need for movement, the new contents, and the attention is very short. A child with ADHD may have difficulty in three different areas: hyperactivity, negligence and impulsiveness, the most common type in children is a combination ADHD types. The preeschool teacher plays an important role in the child´s eniroment and needs to identify the child`s needs, desires, adjust space and activity, establish co-operation with parents and other children in the group to make further progress.