How long it takes to quit smoking before there is no addiction varies from person to person. Physical addiction usually fades away in about 1-3 weeks, while the ensuing psychological addiction has no fixed time point. Clinical studies have proven that physiological discomfort, such as craving for cigarettes, irritability, depression, difficulty concentrating, restlessness, headache, lethargy, and gastrointestinal dysfunction, can occur within 24 hours of quitting smoking and are symptoms of addiction. This symptom is called to physiological addiction to smoking and its time to disappear varies from person to person, in general the average is about 1-3 weeks under normal circumstances. The physiological addiction will gradually disappear with the increase of time to quit smoking, but it should be noted that the patient will have psychological addiction for a long period of time after that, and the psychological addiction will not have a time point to disappear like the physiological addiction, and its duration is directly related to the number of years of smoking and the degree of tobacco dependence. So how long it takes to quit smoking before there is no addiction varies from person to person. In conclusion, the benefits of quitting smoking are well known. For smokers who are not addicted or have a low level of tobacco dependence, they can quit gradually with perseverance, but often require brief advice to quit; for smokers with a high level of tobacco dependence and a strong withdrawal response, stronger interventions are often required to finally quit successfully.