A two-arm randomized controlled trial for smokers who are not intent to quit smoking will be proposed in outpatient department clinics of People's Liberation Army General Hospital in Beijing, China. Smoking reduction intervention arm (SRI) consisting of a very brief face-to-face individual smoking reduction intervention lasted about one minute, and five follow-up interventions lasted for about minute each. Control arm (EDA) consisting of a very brief face-to-face individual exercise and dietetic advices lasted for the same intervention time as SRI, and also five follow-up interventions lasted for one minute each with different intervention contents.

Inclusion Criteria:

1. Aged ≥18 years old;
2. Smoked more than 10 cigarettes per day in the past month.
3. Have no intent to smoking cessation now.
4. Agreed to participate in the follow-up, offer telephone number and signed an informed consent form.

Exclusion Criteria:

1. Smoked less than 10 cigarettes per day in the past month.
2. Had some diseases that let the physician think that it would be unethical not to advise him to quit smoking as soon as possible.
3. Cognitively impaired (such as those with deafness or who could not understand and complete the questionnaire reliably).
4. Pregnant females.