The end of tooth extraction does not mean the end of the problems in the mouth. As bleeding and infection are most likely to occur after tooth extraction, there are many details that need to be understood and mastered: 1. Do not rinse your mouth or eat within 2 hours after tooth extraction Do not rinse your mouth or eat within 2 hours after tooth extraction, and do not lick the wound with your tongue or touch the wound with your fingers to avoid rebleeding or secondary infection. 2. Bite cotton ball or gauze ball lightly Bite cotton ball or gauze ball to stop bleeding. Too hard will hurt a lot; too light or too short is not conducive to stop bleeding; too long, saliva soaked through the cotton gauze, and easy to infect. Therefore, it is best to lightly bite 30-40 minutes before spitting out. 3.Less talking and more rest Tooth extraction is a traumatic surgery, so you should pay attention to rest, less talking, don’t do strenuous sports or heavy physical labor, don’t smoke and drink alcohol to avoid aggravating the pain and prolonging the healing period of the wound after surgery. 4. Avoid brushing teeth on the day of tooth extraction Avoid brushing teeth on the day of tooth extraction to avoid the coagulated wound from bleeding again, use mild mouthwash or light salt water to rinse the mouth, and avoid eating too hot or too hard and spicy food, and eat more fruit juice or fruit puree rich in vitamins to supplement nutrition and promote wound healing. It is normal to have slight pain and some pink blood or blood in the spitted saliva within 24 hours after tooth extraction, and you can take the right amount of anti-inflammatory and analgesic drugs under the guidance of the physician. However, it is worth noting that the pain and bleeding should be getting lighter and less. If there is still persistent bleeding or pain after a few days, or even obvious dizziness and panic and other uncomfortable symptoms, you should immediately follow up with the hospital to identify the cause and deal with it promptly.