According to the principle of environmental control in the travel sites, this paper established The index system of environmental control related to the travel sites of the Three Gorges Reservoir. This index system was mainly based on The 4 levels, i.e. environment, spatial environment, the environment of facility, and the environment of community. At the same time, this paper dwelled on this system by taking the example of the travel sites of the Three Gorges Reservoir in Chongqing.