It is true that, air pollution is becoming a severe problem in many urban areas day by day. However, on the back days, no one suffered from it. Yet, at present many countries that have huge industry especially, China, Pakistan, Uzbekistan, India, Italy are the most poorest areas which have polluted atmosphere. Even, some of them have the erosion of ozon layer. In this essay, I will mention below the reasons of the negative development, and some solutions that can reduce the issue.