Abstract: A correction pen with a pressure adjusting structure having an increased interior pressure of the pen so that the correction liquid may flow out of the pen successfully. The correction pen comprises a pen tube, a penpoint seat, and a ventilating ring. The ventilating ring is installed at an end portion of the pen tube. The lower edge thereof extends to the pen tube, and the penpoint seat is inserted into an end portion of the pen tube. The tightening portion at the lower end of the ventilating ring encloses the periphery of the penpoint seat. Thereby, a pressure adjusting structure with the ventilating ring is formed so that air flows unidirectionally, and thus a correction pen with a pressure adjusting structure is formed.