The article shows the role of the Polish press in the military conflict between Poland and Czechoslovakia about Cieszyn Silesia that took place in January and February 1919. The press at that time was of key significance due to many reasons. One of them was that local politicians were often editors and journalists of these magazines. The author analyses the articles of particular press titles, not only those that were pro-Polish, but he also takes into account the Pro-Czechoslovak ones, associated with the Józef Kożdoń’s Movement. The author shows that the press had both an informational and propagandist function. He also points out the similarities and differences in the propagandist activity in the pro-Polish press, determined by the political affiliation of the particular magazine. The author presents the methods of the press propaganda, so that in specific local circles they played a role of the pro-Polish or pro-Czechoslovak factor.