It is normal to have blood clot in the hole after wisdom tooth extraction, it is the process of healing of the extraction wound, no need to deal with it, but we should pay attention to prevent the blood clot from falling off. After wisdom tooth extraction, usually use cotton ball local pressure to stop bleeding for about thirty minutes, after which the local bleeding stops, the blood clot will be formed to close the extraction wound, the existence of the blood clot can protect the wound, prevent infection, and promote the normal healing of the extraction wound. Therefore, it is normal to have blood clots after tooth extraction and no special treatment is needed. However, after wisdom tooth extraction, it is important to pay attention to not brushing and rinsing within 24 hours, and after 24 hours, brushing and rinsing should be gentle, and try not to touch the blood clot, in order to prevent the blood clot from dislodging or forming poorly, which may lead to slow healing of wounds, localized infections, pain, and so on.