In this work we tried to represent the function of Personal (Relative) pronoun šta and što , to focus the apparent differences in their meaning, although they sometimes appear alternately as competitive items, and to research different references of their function. What we found out in works of Jovan Dučić and Miro Vuksanović reflects, to a great degree, the condition in the Serbian language generally and confirms the fact that these personal (relative) pronouns are used in various cases with distinctive meanings.