Analysis of port′s influence on economy is conducted based mainly on system dynamics(SD),combining also input-output method,the Mulitplier,and econometrics model.

Based on the theory that investment in fixed assets makes great contributions to economic growth,this paper quantitatively analyzes the relationship between investment in fixed assets of Anhui province and its economic growth by establishing an econometrics model.

On the basis of discussing the characteristic and conten of regional economic planning on county level, thisarticle establishes the econometrics model and goal planning policies for regional economic planning on county level.

The paper highlights the distinguish between the original stochastic disturbance term and the derived stochastic error term, suggests that if the relationship error of model or the measurement error of variables exist in an econometric model, in the most of cases the stochastic error term will not fellow the normal distribution assumption and some other Gauss Assumptions.