The anisotropy of the electrical resistivity and optical properties of the antiferromagnetic topological insulator MnBi2Te4 single crystal has been studied. It is shown that the electrical resistivity of MnBi2Te4 measured perpendicular to the (00 l ) plane is an order of magnitude higher than the resistivity measured in this plane. The behavior of optical conductivity is qualitatively similar for the cases when light is directed at the surface (00 l ) and at a surface perpendicular to the plane (00 l ). It has been shown that the optical spectrum of MnBi2Te4 is formed predominantly by interband transitions of charge carriers.