In the theoretical part of the paper, the preconditions for a proper speech and language development of the child are stated. A child should be primarily healthy, involved in the process of socialization and surrounded by quality speech, which he or she will later repeat in his learning process. After the child has spoken its first word around the age of 1, he or she should be provided with a supportive environment and control of environmental factors which, if not appropriate to the child's age, may adversely affect speech development. We can also encourage speech by various games that will affect his vocabulary, grammar and phonological development. Given that speech and language disorders are fairly common, the paper provides a "speech and language development calendar" that can help parents recognize child's unusual behaviour at a certain age and seek expert advice and assistance in a timely manner. The study involved 40 parents of pre-school children. The aim was to explore speech, grammar, pronunciation, the use of computers and picture books, and the imagination and creativity of their children. The results indicate that many children have difficulty with pronouncing certain sounds, although children as young as five should already pronounce all sounds correctly. On a positive note, children are very interested in reading and flipping through stories and picture books, which is crucial for proper speech and language development.