A kind of mouth motion device includes to pull support ontology and grab handle. Pull support ontology have above pull support part and under pull support part, above pulling support part, to pull support part under relative to each other, above pull support part pulled under support part connect to be formed ring bodies to pull support ontology it is interior with accommodating space； Grab handle has opposite first end and second end, and the affixed what of first end pulls support ontology, and second end has grip part. Wherein, accommodating space further has a plurality of ribs, each ribs has third end and the 4th end, support part is pulled on the affixed what in third end, support part is pulled under the 4th affixed what in end, by the setting of each ribs, when setting mouth motion device to be engaged in what oral cavity, it can will pull support ontology and prop up and increase elastic strength.一種口腔運動裝置，包括有扳撐本體及握持柄。扳撐本體具有上扳撐部及下扳撐部，上扳撐部與下扳撐部彼此相對，上扳撐部與下扳撐部連接形成環狀體使得扳撐本體內具有容置空間；握持柄具有相對之第一端及第二端，第一端固接於扳撐本體，第二端具有握持部。其中，容置空間進一步具有複數個加強肋，各加強肋具有第三端及第四端，第三端固接於上扳撐部，第四端固接於下扳撐部，藉由各加強肋的設置，使口腔運動裝置置於口腔中進行咬合時，能將扳撐本體撐起並增加彈性強度。
