A method for water resource scheduling in cascade hydropower stations, which characterized by comprising with: a) Obtaining water resource data of each hydropower station in the cascade hydropower stations at the current moment; b) Determining whether each hydropower station is in a safe operating state based on its water resource data; c) When all hydropower stations are confirmed to be in safe operating states, determining whether to perform water resource scheduling based on their water resource data, preset electricity price schemes, and target historical data [1]; d) If water resource scheduling is required, determining a scheduling scheme based on the water resource data and a pre-trained water resource scheduling model.