This creation is a kind of hand-held mouth mirror, includes: a gripping member； One processing unit is arranged on the gripping member； One oral cavity observation member, connects the gripping member, which has a mouth mirror, and has a refrigeration wafer cell and sterili-sation unit connection aforementioned processing unit； One power supply unit connects aforementioned processing unit and is arranged on the gripping member. Thereby, the hand-held mouth mirror system of this creation can inspect on one side the situation of cavity interior for user, it carries out eliminating intraoral bacterium on one side, and prevents the mouth mirror from hazing using the cooling wafer unit in use process, the situation of Chu's cavity interior is not seen to avoid user.本創作係一種手持口鏡，包括有：一握持件；一處理單元，設置在該握持件上；一口腔觀察件，連接該握持件，該口腔觀察件有一口鏡，以及有一致冷晶片單元及一殺菌單元連接前述處理單元；一供電單元，連接前述處理單元並設置在該握持件上。藉此，本創作之手持口鏡係能供使用者一邊檢視口腔內部之狀況，一邊進行消滅口腔內的細菌，且使用過程中可利用該致冷晶片單元防止該口鏡起霧，以避免使用者看不清楚口腔內部之狀況。
