Sistan and Baluchestan province has 1. 4% of GDP and occupies the 19th position in the country. Meanwhile, the province's GDP per capita in comparison to the country has a significant difference. In this pape, in order to measure the multiplier, the input-output table approach has been used by flagg's spatial contribution method. Examining the contribution of forward and backward linkage as well as the results of multipliers, dispersion and sensitivity factors show that 12 fields of economic activity have a coefficient of diffusion power and high dispersion sensitivity. on the other hand, the average cost of households in the province is 65 percent of the average cost of households in the country, and this indicates the low welfare of households in the region.