本文首先重点介绍了研究的理论基础，阐述了世博会及世博经济的概念，并对乘数效应和投入产出系数做了相应的解释。

Firstly, the paper introduced theory base of the study, explained what is Expo and Expo economy, expatiated on multiplicator effect and coefficient of input-output unit.

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以系统动力学(SD)模型为主体，结合投入产出法、乘数法和计量经济学模型，进行了港口经济影响分析。

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.

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