An oral rehabilitation device for rehabilitating the oral cavity of a user includes a device body, a first activating member, an upper-jaw member, a lower-jaw member, and a processing unit. The first activating member is disposed on an end of the device body. The upper-jaw member and the lower-jaw member are connected to the same end of the device body and are for contacting an upper jaw and lower jaw of the user, respectively. The processing unit is coupled to the first activating member and is used to control the first activating member to drive one of the upper-j aw member and the lower jaw member to open/close relative to the other of the upper-jaw member and the lower jaw member, such that the upper jaw and the lower jaw can be rehabilitated. The present invention further discloses a medical treatment system to which the oral rehabilitation device is linked.本發明揭露一種用以對一使用者進行口腔復建的口腔復健裝置,該口腔復健裝置包括一裝置本體、一第一致動件、一上顎構件、一下顎構件、以及一處理單元,該第一致動件設置於該裝置本體的一端上;該上顎構件與該下顎構件連接於該裝置本體的該端,且分別用以抵於該使用者的一上方齒列與一下方齒列;該處理單元耦接於該第一致動件並用以控制該第一致動件驅動該上顎構件與該下顎構件的其中之一相對該上顎構件與該下顎構件的其中另一開合,以對該使用者的該上顎與該下顎(即顳顎關節)進行復健。本發明另提供一連結於該口腔復健裝置的醫療系統。