Speech as means of communication has an important role in the life of every individual. By birth each child gets preconditions for developing of speech. However, in recent years we have witnessed an increase of speech and language difficulties in children of preschool age. If those difficulties are not detected in time and if it is not responded in a timely manner this can lead to later learning difficulties. In the second chapter we will talk about the course of development of speech, which is divided into two periods: preverbal and verbal and we emphasize features of certain stages of development of speech. The third chapter "Articulation disorders" describes the most common speech disorders in children, their classification and causes. There is also a table showing the age at which correct articulation of sounds appears by years. This table can help parents and preschool teachers in keeping track of speech development. Next chapter is about several types of difficulties: slow language and speech development, undeveloped speech and specific language impairment. The fifth chapter deals with disorders of rhythm and tempo of speech, while the sixth describes the difficulties caused by brain damage. Play is children's main activity but also their need. Through play child acquires different knowledge and experiences and makes friends. Therefore, the seventh chapter describes the importance of language games, songs and games with fingers for development of speech. The eighth chapter describes the rules of games, states their aims and objectives, gives a course of action that has been implemented in kindergarten, while the ninth describes the role of preschool teachers in preventing disorders in speech and language communication. In order to prevent speech and language difficulties, preschool teachers should strive to be a better voice models to children and should encourage the social integration of children in the group.