The comprehensive stadium needs to take into account the different needs of competition and post-competition operation. If the air-conditioning system is designed in accordance with the international standards for competitions, there will be great redundancy after the change of activity types and frequencies during post-competition operation. Therefore, it is necessary to customize the operation strategy for the operation requirements. Aiming at a comprehensive gymnasium in Hangzhou, the hourly load simulation of the whole year is carried out according to the operation content after the competition, the results show that the peak load of the air conditioning system is significantly decreased by 30% compared with the original design, and the system load rate is lower than 40% in 90% of the whole year， which proves that the ice storage system has good economy. Based on the load prediction， the optimal operation strategy of ice storage air conditioning system under different load rates is analyzed， which provides a reference for the application of ice storage system in comprehensive gymnasium.