To solve the shortage of useful materials in Baihetan Hydropower Station aggregate storage, taking the site geological conditions, excavation features and time, construction conditions, and economy into consideration, three supplementary mining scheduling programs are designed and optimized based on the re-examined results of the storage. With the help of linear weighted sum(LWS)method, the proposed three mining plans are analyzed for comparison based on four evaluation indexes, including the reserved useful materials, excavation time, construction conditions, and economy. The result shows that the third exploitation plan is the best that can increase 3. 8 million cubic meters of useful materials after excavating. It ensures the supply of aggregate content for the dam concrete program and guarantees the construction of Baihetan Hydropower Station.