The conditions of vacancies’-concentration ordered-distribution formation inside the two-dimensional rectangular plate are considered. Corresponding equation for the stationary case is analysed. The interaction between vacancies is described by the function $S(x, y)$; in the work, evident expression for $S(x, y)$ is found. As shown, for the constant temperature on a surface plate, self-organization (ordered-distribution formation) can take place only inside the very little plate. It is possible the onset of complicated dependence of vacancies’ density on the co-ordinates within the big plate, if there is a functional dependence of temperature on the plate co-ordinates.