Dust-proof toxin-filtering respirator

A dustproof filter respirator is provided, which is composed of a closed-loop (1) and a panel (3). The closed-loop (1) takes a shape of perry ring after air inflation; the outline of the panel (3) is the same as the closed-loop (1) and bonded with the closed-loop (1) closely; the upper and lower parts of the panel (3) are respectively provided with an exhalation valve, and a dustproof filter slot rack (12) and expiratory valve. The utility model is not only easy and comfortable in wear, small in face contact area, good in closeness and more effective in the dustproof filter, but also easy and convenient in displacing the dustproof filter piece without frequent cleaning and disinfecting the whole and more suitable for automation and mould production.