A maximum of two teeth should be extracted at a time, because tooth extraction is an invasive treatment and if too many teeth are removed at once, it is likely to induce other diseases, especially in children with weak resistance, middle-aged and elderly people or patients with their own underlying diseases, and it is important to be cautious at this time. It is important to carefully assess your health condition and give a full account of your past history with the doctor in order to help him/her make a correct judgment. Patients should not rush to remove multiple teeth at once, as this is risky and prone to bacteraemia because of the large number of wounds in the mouth, which is dangerous for the patient. After extracting one side, the other side can be extracted at an interval of about 3-5 days, with a maximum of two extractions at a time.