The main methods to stop bleeding after wisdom tooth extraction are as follows: 1. You need to bite a cotton ball for 30 minutes to an hour to stop bleeding by pressure at the location of the extraction wound, and not to eat immediately after spitting out the cotton ball, but to wait 2-3 hours before eating and drinking, and not to lick the extraction wound or suck the extraction wound to prevent bleeding and hematoma after the blood clot in the extraction wound is dislodged. 2. The wisdom teeth should not be brushed or rinsed for 24 hours after extraction to prevent bleeding after the clot is dislodged from the extraction wound.