When wearing a filter-type gas mask, the user must first select the appropriate mask according to the size of his head. When wearing a filter-type gas mask, adjust the middle and upper headbands to appropriate positions, release the headband, grasp the sides of the mask with both hands, hold your breath, close your eyes, and cover the chin with the chin, both hands simultaneously. Pull back the top strap firmly from the bottom up, wear the top cover from the bottom up, and tighten the headband so that the mask fits snugly over the face, then breathe deeply and open your eyes.

To check the airtightness of the filter-type gas mask, use the palms of both hands to block the breathing valve body from the air inlet and outlet, and then take a breath. If the mask is tight against the face, there is no need to leak. Otherwise, you should find out the reason and adjust the wearing position. Until airtight.

When wearing it, care should be taken not to press the headband and hair of the filter gas mask into the mask's sealing frame, or to allow the headband claw of the mask to bend into the mask. In addition, users should shave their beard clean before wearing a filter-type gas mask.