A venting mouth mirror device includes a handheld module and a rotating mirror module. The handheld module includes a carrier and a handle connected to the carrier. The carrier has a peripheral wall, a mounting wall connected to the inner periphery of the peripheral wall, and a bottom cover, and the peripheral wall and the mounting wall jointly define a first chamber and a second chamber located on both sides of the mounting wall, and a plurality of first chambers along the The air outlet gaps are distributed on the circumferential side and communicate with the second chamber. The handle is connected to the peripheral wall and together with the peripheral wall forms an air inlet passage communicating with the second chamber. The rotating mirror module is arranged on the installation wall and includes a rotating mirror and a driving member. The rotating mirror has a mirror body rotatably accommodated in the first chamber, and a mirror shaft connected to the mirror body and passing through the mounting wall. The driving member has a connecting shaft connected with the mirror shaft and a plurality of paddles connected with the connecting shaft.一種出氣式口鏡裝置，包含手持模組及旋轉鏡模組。手持模組包括載座及連接載座的握柄。載座具有周壁、連接於周壁內周的安裝壁及底蓋，且周壁與安裝壁共同界定出分別位於安裝壁兩側的第一容室及第二容室，以及多個沿第一容室周側間隔分布並與第二容室連通的出氣縫隙。握柄連接於周壁且與周壁共同形成與第二容室連通的進氣通道。旋轉鏡模組設置於安裝壁，並包括旋轉鏡及驅轉件。旋轉鏡具有可轉動地容置於第一容室的鏡體，及連接鏡體並穿過安裝壁的鏡軸。驅轉件具有與鏡軸連接的連接軸及多個連接連接軸的槳葉。
