The experiment of determination of the 64 Zn(n, a)61 Ni reaction cross section in the 5.0 -6.75 MeV neutron energy range was performed at the 4.5 MV Van de Graaff accelerator at the Institute of Heavy Ion Physics, Peking University, Beijing. A double section ionization chamber with grids was used for direct registration of the reaction products. The cross sections and angular distributions were extracted from the experimental data. The obtained values were compared with the results of other authors and theoretical estimations. The analysis of the experimental data and model calculations were carried out.