The invention discloses an 
oral treatment protective operation device capable of improving the vision of a doctor. The 
oral treatment protective operation device includes a protective cover 
assembly and a suspension bracket which is connected to the protective cover 
assembly, wherein the protective cover 
assembly includes a transparent protective cover, the protective cover is provided with a softsealing which decks with the mouth and a joint which is connected with a strong suction tube, operation windows are formed in the left side and right side of the protective cover, and an arc-shaped 
slide plate is arranged at the mouth of each operation window; a circular operation hole is formed in each arc-shaped 
slide plate, the operation holes are connected with a soft arm sleeve, and a depression part is formed in the side, towards the doctor, of the protective cover; and a 
magnifying glass with an adjustable angle is arranged in the depression part, the suspension bracket includes a 
vertical deflection adjustment rod, a horizontal connection rod and a connection lock sleeve, and further includes a stay cable or a 
diagonal member. 
Aerosol and droplets which are generated by a patientduring 
oral treatment can be isolated and absorbed so that the problem of 
cross infection which is caused by 
diffusion of the 
aerosol and droplets in the surrounding environment is solved, and the vision of the doctor can be improved through the 
magnifying glass with an adjustable angle.