Abstract: Based on the environmental impact mechanism, the paper summarizes the measurement indexes of the environmental impact assessment of sports competition by the pros and cons and discusses all kinds of environmental pollution as well as the corresponding evaluation strategy from the preparing to the hosting periods, which is conducive to predicting the pollution and its seriousness brought about by sports competitions. This will lead to orderly environmental protection, thus reducing environmental pollution and resulting in the harmonious development of sports competitions and urban environment.

Key words: sports events, environmental impact, evaluation