The article represents the results of a phonetic experiment devoted to the study of pragmatically, and the stylistically determined manifestation of directive speech acts in the modern German language. The experiment allowed establishing the prosodic invariant of the directive speech act and describing variant patterns realized in diverse situational conditions which demonstrated a different degree of categoricalness and revealed their differential character on the level of prosodic expressive means. The research showed that pragmatic identification and stylistic differentiation of directive speech acts is realized utilizing all prosodic parameters - pitch, intensity and tempo. The complex analysis of pitch, intensity and tempo characteristics specific for situational variants of the directive illocutive allowed defining the level of involvement of these prosodic means in the functional realization of directive speech impact. © 2020 Karandeeva et al.; Licensee Lifescience Global. This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.