The function transfer method is primarily used for the numerical calculation and analysis of non-diffracting optical lattices. But it has complicated mathematical expressions and the programming is challengeable as well. These features make the method difficult for flexibly analyzing the influence of individual optical component as well as its defects and the optical structure on the physical formation of optical lattices. Here, we propose a simulation approach to make the analysis easier. With this simulation method, typical lattices structure, such as fundamental square lattices, maximum symmetric combined fundamental square lattices, and first sparse square lattices, were realized. The non-diffraction performance of the structured beam was verified. These results illustrate the feasibility of the proposed method. Furthermore, the method is useful to find out the correlations among the optical system structure, optical components and the optical lattices. It helps to clarify the formation mechanism and the regulation method of non-diffracting two-dimensional optical lattices and, thus, to develop the potential application.