The utility model provides a medical diplopore fills up for fixed mouthful contains mouthful and to fill up the cover, mouthful fill up the pipe, and it has the diplopore mouthful to fill up to cover to open, and it is the diplopore passageway that corresponds with the diplopore mouthful to fill up the pipe, the one end and the diplopore that mouthful fill up the pipe two the intubate passageways of formation that link to each other. Simultaneously, a mouthful pad covers and is equipped with two pipeline fixed knot structures, and both sides are equipped with the foraminiferous and fixed bandeau of fixed head, and the other end of mouthful pad pipe is equipped with the upper and lower alveolus of convex surface. This mouthful of pad can go on simultaneously effectively fixedly to two kinds of pipelines, prevent aversion, the slippage of pipeline in the use, the length of fixed bandeau can be adjusted, is fit for the patient of different head circumferences, the alveolus is made by the latex, does not hinder the tooth, and patient's interlock is comfortable. The utility model discloses simple structure, convenient to use can solve clinical reality of work problem.