The study of mechanisms of spatial convergence, and their impact on achieving spatial development is necessary to find out the strengths and weaknesses in the construction of local economies and which has become more of a condition to reduce disparities and spatial differences within the same geographic structure, in order to help and guide public economic and social policies for using development possibilities and resources more effectively. we will use a panel data analysis, to test the size of homogeneity between geographic regions and their importance in measuring levels of homogeneity or heterogeneity according to this study of unemployment and the spatial distribution of wealth ratios in municipalities ,The results of this analysis indicates the presence of heterogeneity among municipalities of saida regions, which proves the existence of spatial disparity in development levels.