Although smokers who suddenly quit smoking may experience some withdrawal reactions, it is a good thing overall. Even long-term smokers should actively quit smoking to avoid nicotine, tar, and other harmful substances that continue to harm human health. However, the sudden withdrawal reaction caused by quitting smoking is likely to make people who quit smoking resume smoking, and if necessary, seek professional medical help to successfully quit smoking. First, the benefits of quitting smoking 1, reduce the damage to their own: smoking for the respiratory system, cardiovascular system and other systems with greater harm, can increase the chances of coronary heart disease, stroke, chronic obstructive pulmonary disease and even lung cancer and other more serious diseases. Quitting smoking can significantly reduce the chances of disease, even for long-term smokers, and timely quitting can reduce the damage and avoid further impact on health. If the disease has occurred because of smoking, it is more important to follow medical advice to quit smoking, so that the body recovers as soon as possible; 2, reduce the harm to others: second-hand smoke, third-hand smoke caused by the harm should not be underestimated, the surrounding people will also be because of the smoking behavior of smokers and passive inhalation of harmful substances. Even if you do not share a room with others when you smoke, you will pass harmful substances to others through clothing, hair, etc., causing unnecessary harm. Quitting smoking can solve this problem at the source, thus protecting the health of others. The more common withdrawal reactions can be coughing, dizziness, fatigue, insomnia, etc. Some people may even experience personality changes, such as becoming irritable and irritable. These manifestations are mostly normal physiological phenomena, because the nervous system has been stimulated by nicotine for a long time, resulting in dependence and addiction, and the sudden cessation of nicotine intake will have a certain impact on the nervous system, resulting in the above-mentioned reactions. However, as the body metabolizes, the nicotine concentration becomes smaller until it disappears, and these symptoms and the willingness to smoke will gradually decrease. So quit smoking people should actively overcome these symptoms, so as to achieve the purpose of quitting smoking. Third, smoking cessation precautions 1, step by step: in order to avoid a strong withdrawal reaction, especially for people who have smoked for a long time, you can plan to gradually reduce the amount of daily smoking until you no longer smoke; 2, avoid contact: quitters should consciously refuse to smoke, avoid storing cigarettes at home, and for others to hand cigarettes should consciously refuse, try to avoid the attraction of the outside world; 3, outside Auxiliary: you can replace the stimulation of cigarettes by adjusting the diet, such as containing food plums, candy, etc. Family members should also do a good job of daily supervision and remind the quitter in time when his or her will is weak. If there is a more serious withdrawal reaction, or repeatedly failed to quit smoking, family members should give encouragement, do not give up, and seek professional medical help to quit smoking.