Chinese economy is regulated in the development process，which basically keeps the stable and pretty high development in 2008. The international economic circumstances will come to fiercer in 2009，and Chinese economy will be faced with cyclical adjustment and structural adjustment. The article makes a sufficient estimation with the rigorous economic circumstances at home and abroad in 2009，and forecasts the three types of situations with different combination of policy and environment. It is suggested to take “keeping stable and pretty high development in economy and promoting the conversion of the economic structure” as the basic orientation of macroeconomic control，carry out positive fiscal policy and prudent monetary policy，expedite the marketization reform of the formation mechanism of production factor price，intensify the policy support for enterprises’ technological progress，pioneering and innovation，and promote the economic development in a sound and rapid way.