Patients with coronary heart disease who want to quit smoking can have small snacks in their daily routine, the specific snacks can be any snacks, but avoid junk food. In addition, the following methods are recommended to achieve the purpose of quitting smoking. 1, if the patient has enough perseverance, it is recommended to quit smoking once and for all, which requires great perseverance and persistence. 2, if the patient is addicted to smoking and has been smoking for a long time, you can use a gradual approach to quit smoking, for example, the original 20 cigarettes a day, after 1 week down to 10 cigarettes a day. And so on, gradually reduce the number of cigarettes per day, and eventually to quit smoking. The method is more moderate and the withdrawal symptoms of quitting smoking are less severe.3. At the same time, you need to carry out other ways to divert the adverse effects of quitting smoking, such as chewing gum, developing hobbies, exercising more, and diverting attention.