2-3 hours after the wisdom tooth extraction, you can simply eat and drink water. Because the blood clot in the extraction wound is relatively stable at this time, clot mechanization has started to occur and granulation tissue will be formed gradually. At this time, you can drink some warm and cool plain water, but not drinks or alcohol, and you can only drink water normally, not rinse your mouth. Because the action of gargling is too big, it will form a rapid impact in the mouth, which will cause the blood clot in the extraction wound to be dislodged, resulting in secondary bleeding, hematoma, infection and other complications. Drinking water can only be done normally, and no straws can be used. The use of straws can also lead to the dislodgement of the blood clot, causing the possibility of secondary bleeding.