As soon as I go to the hospital, there are a lot of people. I feel that the air has changed. There are people hanging salt water, injured people, urinating people, and there are people in the corridor. The air is really bad. A lot of people wear masks, and they wear them backwards at one time. Here are the ways to wear masks on the Internet Usually, the disposable health masks we buy in pharmacies are medical general surgical masks. They have both positive and negative sides, with the darker side - the blue side facing out, and the lighter side facing inward, which is close to our face. 1. Carefully cover the mouth and nose with a mask and fasten it to reduce the gap between the face and the mask as much as possible; 2. Avoid touching the mask when using it - wash hands with soap and water or alcohol hand sanitizer after touching the used mask, for example, to remove or clean the mask; 3. Replace the mask with a new clean and dry mask after getting damp or contaminated with moisture; 4 Do not reuse disposable masks. Disposable masks should be discarded after each use. The wearing methods are as follows: (1) before wearing the mask, hands should be cleaned to avoid touching the inner side of the mask to reduce the possibility of contamination; (2) when wearing the mask, distinguish the inside and outside, up and down of the mask, the light color side is inside, the dark side is outward, one end of the metal strip (nose clip) is above the mask, and the folding surface is fully unfolded; (3) Clamp the two ends of the bandage to the upper and lower ends of the nose band, and then fasten the bandage to the lower end of the nose band or the lower end of the nose band. (1) When purchasing and using medical surgical masks, you should purchase them in regular hospitals and pharmacies. At the same time, pay attention to the production batch number, production date and service life of the product's outer packaging. Production license, product registration number and other information, as well as detailed product instructions;