Drooling after wisdom tooth extraction is a normal phenomenon, which will gradually recover with the healing of the extraction wound. It is necessary to pay attention to not doing sucking action and spitting action, which may cause negative pressure in the oral cavity, leading to the dislodgement of blood clot and affecting the normal healing of the wound. After wisdom teeth extraction, excessive saliva secretion may be caused by the stimulation of the extraction operation, the pain of the wound, blood seepage from the wound, and prolonged opening of the mouth, etc. This is a normal phenomenon, and will gradually return to normal with the healing of the tooth extraction wound. Excessive saliva can be swallowed or allowed to flow out naturally, and repeated sucking and spitting should not be done to avoid causing negative pressure in the mouth, resulting in the shedding of blood clots, causing pain, bleeding, infection and other complications, and affecting the normal healing of the wound. If the above symptoms occur, it is recommended to go to the hospital in time to receive professional treatment as soon as possible.