Suddenly do not want to smoke may be the following reasons: First, it may be because of their own stress, encountered a lot of social stress factors, such as work pressure, economic burden is relatively heavy or interpersonal relationships appear a lot of contradictions, these problems may make some people appear suddenly do not want to smoke the problem, or even because of the pressure appeared reluctant to eat, reluctant to express with people and a series of problems. Second, it is possible to realize the great harm of smoking, so take the initiative to ask to quit smoking, and actively cooperate to quit smoking, it is possible to have the problem of not wanting to smoke, especially realizing that smoking may cause various respiratory diseases, and may also make family members suffer from serious diseases such as lung disease or even lung cancer.