Nowadays,tourism is a developing and prosperous industry in China.However,it will produce many problems to our world.Particularly,some people think that too many tourists have negative impact on our environment.Other people don't think so.From my perspective,too many tourists will pose threat to our environment by producing much more rubbishes and damaging the nature . Too many tourists go to the one scenic will produce many rubbishes ,which will lead to servious consequences to our environment.Firstly,many tourists will throw their producing garbages when they visit the spots.It will let our environment looks ugly and not chean.Secondly,these rubbishes would not dissolve instantly and it will pollute our soild seriously. Those who lack of the sense of protecting the environment will damage our nature.Many tourists will do some improper behaviours ,such as painting on our trees ,picking the flowers ,playing in the grass and so on .These behaviours will let the environment become not recover easily. We need to keep a sense of protecting well our environment in our mind.Not to throw the rubbishes to it and damage the nature personal.Only we keep ourselves obey the environmental rules ,our environment will become more beautiful and natural.