It is undeniable that tourism brings about many positive impacts; however, there are still drawbacks which we can't ignore. First of all, tourism may lead to social problems such as increasing in crime rates, gambling or rise in costs of living. Secondly, many environmental problems which are doing harm directly to human's health have become more serious due to the development of tourism. Moreover, tourism contributes to the destruction of wildlife in some places. The habitats of wild plants and animals are being threatened due to the building of resorts and visitors’ activities. In conclusion, many places in the world rely heavily on tourism as a key source of income and employment nowadays but it can also be a source of problems. Therefore, we should consider carefully so as to develop tourism in a wise way.