The hole created after the extraction of a wisdom tooth is called an extraction wound. The method of cleaning the extraction wound should be chosen according to the different stages after the extraction, including mouth rinsing and local rinsing. 1. Mouth rinsing: In the first week after the extraction, you can only rinse your mouth to clean the extraction wound. 2. Local rinsing: One week after the extraction, local rinsing can be used to clean the extraction wound. You can follow the doctor’s instructions to rinse out the food residues in the extraction wound with compound chlorhexidine gargle solution. Patients should pay special attention to the fact that the local rinsing method should not be used to clean the wound within one week after the extraction, which will easily cause the shedding of blood clot in the extraction wound, resulting in the local void, which will lead to the infection of the extraction wound.