Due to the Finitude and the environmental effects of the use of fossil fuels in power generation, many countries are looking for alternative methods in the industry, including biomass that is one of the main sources of renewable energy, Despite the success and promote the use of biomass in electricity production in most parts of the world, Share of the electricity industry in the country is very small, Agricultral waste is a major source of it. The researchers can change the physical and chemical properties so that their combustion behavior the seme as fossil fuels , So in this article, the authors review the procedures to determine the quality biomass fuels ,such as divice analysis CHNOS, TG and using of firecad software for cotton stalk sample that Based on research conducted by the authors in connection with agricultural wastes fuel Ardabil province reported more occasions, the amount of pollutants produced by the combustion parameters are obtained.