Abstract: This paper proposes a wind-fire-storage coordinated optimal scheduling method considering the cycle mileage cost of energy storage by combining the full-life equivalent full-cycle model of energy storage. Firstly, in conjnnction with the calculation model of the full cycle number of the entire life, the life loss evaluation model of the energy storage device in the cycle mileage of different charge and discharge depths is further enhanced. Then, on the basis of accurately calculating the cost of energy storage cycle mileage, we constructed a wind-fire-storage coordinated optimization scheduling model considering factors such as energy storage operating cost, thermal power unit operating cost, and wind curtailment loss is constructed. Finally, the correctness and effectiveness of the proposed method are verified through example analysis, and compared with the traditional scheduling method of settling the operating cost of energy storage by kWh, this approach effectively avoided the negative impact of discharging under low charge on energy storage life, thereby ensuring the service life of energy storage system.