Abstract: The organizing committees of China mega sports event have been calling for frugality with the slogan "Reduction of Cost", which, in essence, aims to improve the effectiveness of all resources.Based on the theory of sustainable management of mega sports events, the state of resource management of the Tokyo Olympic Games is analyzed.It is found that:the Tokyo Olympic Organizing Committee uses the life cycle theory as the guiding principle to divide the resource management work into 3 stages of resource purchase, use and cycle. The policy system and organizing system are established; concrete measures, such as reducing food waste, reducing packaging materials, recycling of waste, and reducing exhaust emissions, are implemented; and the balance of benefits and effect of the resource management is pursued. In comparasion, the philosophy connotation of reduction of cost as a concept of resource management for mega sports events in China somewhat is narrowed down, therefore the conclusion suggested that major sports events should be standardized in strategic planning, resource identification, control objectives, in-game management, and event evaluation, which will promote the new concept of resource management in sports events in China.