The invention relates to a multi-energy coordinated optimization scheduling method considering peak and frequency modulation demands. The method comprises the steps that 1) day-ahead deviation and intraday deviation between a predicted value and an actual value are acquired respectively, wherein the day-ahead deviation and the intraday deviation are caused by wind power and load uncertainties; 2)a discrete Fourier transform method is used to transform the deviation, and standby demands at different time scales are acquired through quantization; 3) a wind water thermal coordinated optimizationscheduling model of the day-ahead time scale is established, and standby demands at different time scales are used as constraint conditions, wherein the model considers the peak modulation demand;4) a wind water thermal coordinated optimization scheduling model of the intraday time scale is established, and standby demands at different time scales are used as constraint conditions, wherein the model considers the frequency modulation demand; and 5) a mixed integer linear programming method is used for solving to acquire a scheduling scheme. Compared with the prior art, the method providedby the invention has the advantages of exquisite standby resource management, improved system operation economy, optimized standby resource allocation and the like.