When comes to tourism will bring harm to the environment or not, opinions vary. Some people worry that too many tourists may bring harm to the environment, while others don't think so. In my opinion, tourism may harm to the environment more or less. plastic polution was a big question. After tourists finished their meal, we could see the plastics everywhere. We all know that plastics hard to decomposed. Once entering the river or the sea, it will harm to so many animals and plants, it can also cause water polution. From the news reportes, we can learn that many animals mistaken the plastics as food and killed by thoses garbage every year. That was actually a tremendous tragedy for both human and animals. In short, if we want to avoid those tragedy, some effective measures must be taken by the tourism sites and government as well as the tourites. Thetourism sites and government should call for people protect the environment and love it. For every tourites, we must establish a sense of coexistence.