This work deals with the investigation of the influence of the preparation procedure and Co content on the activity of CoBEA zeolite in Fischer – Tropsch synthesis. For this purpose the Co-containing zeolites were prepared by a conventional wet impregnation (CoxAlBEA series) and a two-step postsynthesis method (CoxSiBEA series). Calcination at 500 °C, for 3h in air and then reduction at 500 °C in flow of 95 % H2 – 5 % Ar stream of as prepared CoxAlBEA and CoxSiBEA zeolites led to obtain Red-C-CoxAlBEA and Red-C-CoxSiBEA catalysts with different properties in Fischer – Tropsch reaction. The most active catalysts were Red-C-Co10SiBEA and Red-C-Co20SiBEA with high CO conversion of 90 – 95 % and selectivity towards liquid products of 85 % containing C7 – C18 n-alkanes, isoalkanes and small amount of olefins. In the case of Red-C-CoxAlBEA catalysts the CO conversion was of 68 % and selectivity towards liquid products of 57 %. The identified liquid products were mainly C7 – C16 n-alkanes. Moreover, Red-C-CoxSiBEA catalysts demonstrated better stability and resistance to coke formation than Red-C-CoxAlBEA ones. It is probably related to higher dispersion of cobalt nanoparticles in Red-C-CoxSiBEA than in Red-C-CoxAlBEA catalysts and absence of strong Brønsted acidic sites in the former after removal of aluminium in the first step of two-step postsynthesis preparation procedure.