An oral gum massaging device includes a base and a vibration unit. The base includes a base body defining a surrounding housing space, and two U-shaped shock wall. The two U-shaped shock wall each having an outer wall and an inner wall, and the inner wall surface formed with a plurality of bumps. Upper jaw and lower jaw teeth by dental occlusion relationship, the shock wall set in the mouth, and then by the first micro vibration motor shock so that the plural bumps massage the gums to stimulate the blood circulation in gums, maintaining healthy oral tissues.一種口腔牙齦按摩裝置,包含一咬合座及一震動單元。該咬合座包括一圍繞界定出一容置空間的座體,及二分別自該座體兩側延伸並概呈U形之震動壁,且該二震動壁分別具有一外壁面及一相反的內壁面,且該內壁面上形成有複數凸粒。該震動單元包括至少一埋設於該震動壁內之第一微型震動馬達,及一第一電池,該第一電池與該第一微型震動馬達電連接,用以提供電力予該微型震動馬達作動,利用上、下顎牙齒對咬關係,將該震動壁固定於口腔之牙齦,再藉該第一微型震動馬達震動使該複數凸粒對牙齦按摩,以適當刺激牙齦血液循環,維護口腔組織健康。3‧‧‧咬合座30‧‧‧容置空間31‧‧‧座體311‧‧‧啟動開關32‧‧‧震動壁321‧‧‧外壁面322‧‧‧內壁面323‧‧‧第一凸粒4‧‧‧震動單元41‧‧‧第一微型震動馬達42‧‧‧第一電池5‧‧‧舌頭清潔單元50‧‧‧擠壓空間51‧‧‧壓舌板511‧‧‧第二凸粒52‧‧‧口氣芳香劑53‧‧‧觸動開關54‧‧‧第二微型震動馬達61‧‧‧本體63‧‧‧控制按鍵