A dental blowout prevention cover structure, which comprises an air extraction part and a first cup part, the air extraction part is in the shape of a hollow cylinder, and the first cup part is extended and connected to one end of the air extraction part； wherein the air extraction part The part allows gas to circulate and defines a gas circulation axis S1. The dental blowout cover structure further includes a second cup part, which is extended and connected to the suction part and the first cup part. One end, and the first cup part and the second cup part are respectively located on two different sides of the gas flow axis S1； thereby, it can be used to solve the problem of oral cleaning water and saliva spray during dental treatment.一種牙科防噴罩結構，其包括一抽氣部件及一第一罩杯部，該抽氣部件呈空心筒狀，該第一罩杯部延伸連接於該抽氣部件的其中一端；其中，該抽氣部件內可讓氣體流通，且定義有一氣體流通軸向S1，該牙科防噴罩結構更包括有一第二罩杯部，該第二罩杯部延伸連接於該抽氣部件與該第一罩杯部相同的一端，且該第一罩杯部與該第二罩杯部分別位於該氣體流通軸向S1的相異兩側；藉此，可用以解決牙科治療時口腔內的清潔用水、口水噴濺的問題。
