Swelling of the face on the 2nd day after tooth extraction is sometimes a normal physiological phenomenon, especially prone to relatively more invasive tooth extractions. For example, in clinical extractions of buried obstructive teeth, which require incision, flap, debridement, division, suturing, etc., the process of physiological swelling will occur in the corresponding area after the procedure for such more traumatic tooth extractions. This process does not develop to the peak just after the surgery, but reaches the most serious state of swelling on the 2nd-3rd day after the surgery, and the swelling starts to gradually dissipate, and the swelling is basically dissipated after about 7-10 days, which is a normal physiological process, so the swelling of the face on the 2nd day after tooth extraction is generally normal.