Air travel there are some people believe that more expensive air ticket can reduce the air pollution made by air industry. Because it will bring about people giving up their ideas that traveling to other place and the greenhouse gas discharged by airplane will decline if the number of the air flights drops. As well as, other questions about air industry like noise pollution, airport or relative facilities’ construction could be improved. As I see, for the goal to protecting environment through increase ticket price is more disadvantages than advantages, because it is relaxing that having chance to travel other place with a low cost. Most people who live in the city are really stressful , especially those worker working in the metropolitan city. If air ticket is cheap them can travel to distant place to enjoy their holiday. For example, Chinese tourists can travel to some tropical counties and taste those local food rather than stay in home. In broad term, the view about restricting air flight is irrational, cheap air ticket price is beneficial to public. Otherwise air companies should take responsibility to reduce environment pollution trough technical innovation.