In this paper, we modify the existing inacro-cconoinetric models inTaiwan to built a dynamic macro model which incorporates boththe demand and supply sides of goods market and explicitly takesinto account the government budget constraint and the augmentedfinancial market. In the model, we divide the government expenditures into seven different items, including wages and compensations on government employees, government investment expenditure, government intermediate consumption, and transfer payment,etc. Furthermore, we assume the government budget deficit is financed by issuing bonds. Base on this model, we simulate tlieimpacts of policies including deductions on tlie government investment, the intermediate consumption, the employees' wage expenditure, and the transfer payment, increases in the tax revenue, andthe Central Bank's loans to the government, and a reduction of tlierequired reserve ratio on the macro economy of Taiwan during tlieperiod of 1992 to 2001.