This paper studies the insufficiency of the relevant concept and method adopted by the present business management and decision making, introduces the concept of direct value added, puts forward the system method of manufacturing enterprise management and decision making, and conducts the application research in combining with case analysis.

Probe into the application of municipal directly-exerting pressure boost secondary water supply technology in Qingdao;

Connecting with the working practice, this paper makes effective exploration on how to excavate and give full play to the direct value and indirect value of the sci-tech archives.

Based on the definition of positive externality,and its characteristics and types,we can know the direct value of recreational fishery in China,and its positive externalities in the environmental,economic and social aspects.