A kind of cover of breathing mask and the fixed device of ontology,Comprising an ontology and a cover,The ontology is attached at the flange of the bellying periphery with a bellying and one,The flange has most spaced perforation,The cover is made with silica gel material,And directly enter mould and ontology connection,And link integral engaging portion with the fitting portion with a fitting portion and one,The engaging portion have one stick to one of the what ontology outer wall of first side,One stick to one of the what ontology inner wall of second side,Majority is arranged in the what equal perforation and links the connection column and a ring wall of the what outer wall and the inner wall. Thereby, it is not fallen off when can reach air tight high pressure, cleaning, and whole firm consolidation.一種呼吸面罩的罩體與本體固定裝置，包含一本體及一罩體，該本體具有一鼓出部及一連結在該鼓出部周緣的凸緣，該凸緣具有多數間隔設置的穿孔，該罩體以矽膠材質製成，且直接入模與該本體連結，並具有一套合部及一與該套合部連結成一體的結合部，該結合部具有一貼抵於該本體之一第一側面的外壁、一貼抵於該本體之一第二側面的內壁、多數設置於該等穿孔中且連結於該外壁與該內壁的連結柱及一環壁。藉此，可達到高壓不漏氣、清洗時不脫落，且整體穩固固結。
