It is recommended that patients consult with the doctor who removed their wisdom teeth to determine whether they need to be hooked up to water after wisdom tooth extraction. In most cases, it is not necessary to hang water after wisdom tooth extraction. Although wisdom tooth is relatively the most difficult tooth to be extracted among all teeth in the mouth, it is still not particularly traumatic in general, especially for teeth that are relatively well extracted and can be well removed in about 30 minutes or less, and the trauma is not very great. For the extraction of these wisdom teeth, at most some oral medication can achieve a good effect of reducing inflammation and swelling, and there is no need to hang water. However, if there are wisdom teeth that are particularly difficult to remove, or if the wisdom teeth are prone to infection or have already become infected after removal, it is necessary to follow the advice of the physician to hang water if necessary.