Speech is the optimal and most effective way of receiving and transmitting information, acquiring new knowledges, and the main medium of socialization. Different disruptions of pronunciation can occur during speech development. Articulation disorders manifest in the inability to correctly pronounce some of the sounds, their intermixing, and incorrect omission of syllables and whole words. On the other hand, the lexis is rich enough, and the speech itself is grammatically correct. Articulation disorders come to the fore only when the listener points them out. It can be concluded that what is crucial for dealing with the disorder is the proper response of the environment to incorrect pronunciation. Preschool age is an ideal period for that kind of interaction between the speaker and the listener. Two articulation disorders stand out by frequency. Those are multiple irregularities in pronouncing the voice “R” (rhoticism), and irregularities in pronouncing the voice “S” (sigmatism). Stuttering is one of the most widespread disorders in the world, so it is almost impossible to find a person who has never had contact with a person who stutters. Disorders originate from early childhood. Locating the disorders with the help of logopedic diagnostics is very important so that, with the help of a speech therapist, appropriate preventive and elimination measures can be applied.