Abstract: According to the hydrological features of the river and the requirements of project construction, the diversion structure standard and type shall be scientifically chosen, which play the role of controling to the successful construction of the project. Considering the above-mentioned, the diversion standard and project designed originally are modified significantly during construction, by the scientific proof. The project is successfully experienced the extreme Hoods from Yuan River for many times during construction. The successful construction oi Lingjintari project shows the importance of practical consideration, scientifically proof and proper decision.