The invention discloses an intelligent electronic oral ulcer treatment instrument. The intelligent electronic oral ulcer treatment instrument mainly comprises a treatment instrument body, treatment instrument auxiliary equipment and a terminal controller; a liquid medicine tube is arranged in the treatment instrument body and connected with the treatment instrument auxiliary equipment through three catheters, the treatment instrument auxiliary equipment is internally provided with a liquid-sucking device, a dryer and a medicine spraying device, the treatment instrument auxiliary equipment is electrically connected to a terminal controller through a wire, the terminal controller comprises an image display screen, a data processor, a central controller and a main switch. The treatment instrument conforms to an oral cavity structure of a human body, multiple functions are achieved, sputum aspiration, drying and dosing are conducted in sequence, the ulcer condition in an oral cavity can beclearly reflected, targeted treatment is conducted according to the ulcer area and the severity degree, the dosing area and the dosage are controlled, the treatment accuracy and medicine absorbance are improved, the automation degree and intelligent degree are high in the whole treatment process, and cleanliness and sanitation are achieved.