Abstract: Based on factor analysis model, the economic benefits of Suzhou manufacturing sub-sector have been evaluated with multi-index. And combined with manufacturing industry practices, this paper has reached some conclusions: the Suzhou manufacturing industry has developed with steady pace and high-quality. Moreover, the heavy industrialization trend is obvious; industry structure is optimizing, and the task of restructuring and upgrading is becoming urgent. Finally, some corresponding countermeasures and suggestions have been provided as follows: Government should pay more attention to the innovation of management ideas and optimization of the system environment based on the long-term; enterprises should play the main role in the construction of industry chain system and cultivation team of enterprises on the basis of reasonable division of labor; industrial supporting policies should be formulated based on the upgrading needs of individual enterprises.