After tooth extraction saliva is much, blood is much, saliva should swallow or spit out

Try to swallow saliva secreted in the mouth after tooth extraction instead of spitting it out. Because saliva secreted in the mouth after tooth extraction will contain a small amount of blood, and blood clots will form at the wound after tooth extraction. If saliva is often spit out, it is easy to spit out blood clots, which will cause wound pain and infection.