You should not use mouthwash after tooth extraction and need to wait for 24 hours before using mouthwash. Mouthwash may easily cause the blood clot to fall out of the wound, resulting in increased bleeding from the extraction wound. The use of mouthwash after tooth extraction may cause the blood clot to fall off, resulting in repeated bleeding, affecting the healing of the wound and increasing the patient’s pain. It is normal to have blood in sputum after tooth extraction, and it is also normal to have mild oozing of blood in the extraction socket. When the bleeding is heavy and cannot be stopped, go to the dental hospital in time for treatment. Mouthwash is allowed to be used 24 hours after tooth extraction. Because 24 hours after the wound healing at the wound, the blood clot is relatively stable, and gradually organize the blood clot to form granulation tissue, at this time the use of mouthwash is not easy to cause bleeding again, but gargling action should be gentle, otherwise there is a possibility that the blood clot will fall off. After the extraction of teeth should follow the doctor’s instructions, under the instructions of the doctor to carry out effective mouth rinsing. In terms of diet, choose some liquid food, such as egg custard, rice porridge, etc., do not choose hard food that is not easy to bite.