This paper introduces the influence of technical parameters, fuel zones on the investment, production and business of small capacity biomass power plants, as well as analyzes some factors affecting the investment and business activities of small capacity biomass power plants in Vietnam. Based on the economic analysis and financial efficiency of the biomass power project, solutions were proposed to solve the difficulties for investors. From the issues mentioned, the paper provided more information for enterprises to orient technology transfer, training units to orient training and scientific research.