Straw thermal decomposition and gasification now arises hot interests in renewable energy ultilizing technology. In this Paper, both the financial and economic analyses of the straw gasification system for centralized village cooking gas supply, developed by Energy Research Insititute(ERI) of Shandong Academy of Sciences (SDAS), were given to assess its feasibility from the economic view. In addition to the normal impact analysis and breakeven analysis, the common problem of inadequate use of system capacity was sized up by quantitative methods, as well as the preliminary analysis of the projects sustainable capacity in finance and benifit capacity in economy under the mechanism of market and the introduction of loan.