The purpose of the article is to determine the artistic and graphic peculiarities of the Franco-Belgian exhibition poster of the 1890s in the context of the formation of the Art Nouveau style. The research methodology of the work is based on the use of traditional art methods: historical and cultural, reconstructive and model, historical and attributive, which contributed to the revealing of artistic and graphic transformations in the field of Franco-Belgian spectacular poster. The scientific novelty of the article lies in the author’s artistic interpretation of the stylistic manner of the creators of the spectacular poster in “style floreale” as one of the leading directions of the development of the artistic style of that period. The distinctive features of this type of the artistic work are outlined on the basis of the review of the stylistic and image transformations of exhibition posters of the famous artists – J. Chéret, A. Toulouse-Lautrec, E. Grasset, A. Mucha, A. Privat-Livemont and others. Attention is focused on the identification of the presentation features of the advertised exhibition events as an important cultural events of that time. Means of artistic visualization of information are studied taking into consideration the specific nature of the poster. Conclusions. In the general cultural and historical context of that time, the poster has become a significant component of the formation of national trends in the artistic style of the day, in particular – the Franco-Belgian Art Nouveau style. The exhibition poster, reflecting the stylistic landmarks of the time, contributed to the formation of the artistic vision as a manifestation of the cultural and artistic landmarks of the studied period.