It is recommended not to drink water for half an hour after tooth extraction, because the hemostatic cotton ball inside the socket may not be spit out yet after the tooth extraction, so if you drink water, the cotton ball may be swallowed by mistake. If the hemostatic cotton ball has been spit out, it is the period of blood clot formation in the socket, so if you go to drink water, it may take away the blood in the socket and make the gums and sockets in a bloodless state, which will affect the formation of blood clotting function in a long time and lead to dry socket. If you want to drink water, it is recommended that you drink water after 2 hours, and it is not suitable to drink water that is too hot, so as not to affect the blood clot, causing more than bleeding and infection.