Smoking after wisdom tooth extraction is usually not recommended because the nicotine in the smoke can interfere with the normal healing of the post-extraction incision and, in severe cases, may induce infection. If you have to smoke, you should not smoke until 1 week after the extraction wound has healed completely. Smoking is a risk factor for many cardiovascular diseases; it is a major cause of chronic bronchitis and emphysema; it can also increase the secretion of gastric acid and induce ulcers; smoking can also affect oral health. Studies have shown that periodontitis has a clear relationship with smoking and can lead to irreversible tooth loosening; smoking can induce oral cancer; smoking can increase volatile sulfides in the mouth, aggravating bad breath and oral odor; smoking can cause a large number of tobacco plaque deposits on the surface of the teeth, causing tooth staining. Therefore, it is recommended that you do not smoke or smoke less. Develop good oral habits, rinse your mouth after meals, rinse your mouth after smoking, and brush your teeth in the morning and evening. Clean your teeth once every six months to wash off the smoke spots and reduce bad breath. Do oral examination once every six months to find oral problems and treat them in time.