As the operation cores for construction enterprises, construction organization design and engineering cost interact with each other and are closely related. The scientific construction organization design is to have comprehensive plan and overall design for the time, space and resources of the engineering construction, seen as the foundation of engineering cost and the core of cost management. The confirmation of project cost is largely attributed to the construction management plan since only according to the rational construction scheme and construction technology can the correct unit price for the project be calculated before the reasonable offer of engineering cost which assures the smooth progress of construction organization..