The environmental damage of tourism is in essence an external diseconomy of tourism. Tourism externality would lead to the low efficient collocation of social resources. Tourism externality could be classified as the externality of tourism production and that of tourism consumption. It is invalid arrangement of property right of tourism resources and the attribute of common goods of tourism products that lead to externality respectively. The externality of tourism should be internalized following these ways:making innovation of property right in tourist areas, adapting the economic incentives ...