As the water resources in the watershed section of Hunan-Guangxi Canal are insufficient，the scheme for water resource allocation is studied. On the basis of the characteristics of the river system in the basin，several measures are put forward to satisfy the water demand of canal shipping by means of qualitative analysis and quantitative calculation. These measures include lifting water over the dam，building a water replenishing reservoir for shipping，and adopting a water-saving lock. The results provide ideas for solving the problems of insufficient water resources for shipping in the watershed section of Hunan-Guangxi Canal and provide references for similar canal projects such as the Zhejiang-Jiangxi Canal.