Nowadays, big cities are facing with air pollution seriously, especially my living area. The main reason is due to human activities from means of transport, industrial production and weather factors. For example, a large amount of the carbon dioxide released into the atmosphere comes to local industries and vehicles every day. Air pollution causes bad effects on our life. We are suffering from various health problems such as lung disease, or even cancer. Besides that there are some examples of the results of air pollution occurring around us such as global warming, acid rain, and ozen depletion. People should plant more trees and use public transports instead of private vehicles to improve the air quality.