Using of limited water level by stage in reservoir scheduling is a effective method that satisfied the requirements of flood control and demand of water resources use , and the result of flood season staging determines the rationality of the limited water level by stage. Therefore, there are two issues in the stage scheduling of reservoir: First, the division of flood season staging;Second, the determination of limited water level by stage. This article elaborated how to determined methods of reservoir flood season staging and reservoir limited water level by stage. It narrated development history of flood season staging and the limited water level by stage,summarized and compared its methods.And points out my view and prospects of the results. It make the work of flood season staging and the limited water level by stage more efficient.