The invention relates to a multi-time-scale AC/DC power distribution network scheduling method and device, which belong to the technical field of AC/DC power distribution network scheduling. The method comprises the following steps of: establishing a double-time-scale scheduling model which comprises a day-ahead scheduling model and a real-time scheduling model and acquiring short-term predictionvalues and ultra-short-term prediction values of photovoltaic and flexible loads, inputting the short-term prediction values of the photovoltaic and flexible loads into the day-ahead scheduling modelto obtain the day-ahead scheduling results of the start-stop state of a gas turbine, the operation condition of an AA-CAES device and the flexible load scheduling plan, inputting the day-ahead scheduling results and the ultra-short-term prediction values of photovoltaic and flexible loads to the real-time scheduling model to obtain a real-time scheduling result, and scheduling the AC/DC power distribution network through the real-time scheduling result. The method and the device improve the operation flexibility and stability of the system, improve the renewable energy consumption capability of the system, reduce the operation energy consumption of the system, and provide guidance for the safe, stable and economic operation of the power grid.