In order to arrange the progress of engineering constructions rationally and
make optimal use of resources, subjects such as operational research, economics,
engineering science, decision making management,etc. are used comprehensively on a
man-computer interactive system to produce an optimum decision support system for
project construction plan (PODSS). The functions, structure and main models of the
system are described and elaborated, with the corresponding software developed. The
experimental result shows that the system can provide an assist management and
decision-making environment for the planners of engineering construction projects and
spot managers, and is an effective technological tool for construction firms to make
scientific decision.