Children’s mask wearing methods, including choosing the right size of mask, hand washing, wearing, replacement and so on. 1. Choosing a mask: Due to the different sizes of children’s faces, it is necessary to choose the right mask for the child in order to make the mouth and nose in a sealed state. You can choose a mask that fits the current level of protection under the guidance of a professional. 2. Wash hands: You need to wash your hands carefully before wearing the mask to avoid bacteria on your hands from infecting the mask and causing respiratory infections. 3. Wearing: Hold the outer side of the mask with your hand, cover your nose and mouth, and put it close to your face, wear the elastic rope on both sides, and adjust the iron bars on the nose to make the mask close to the bridge of your nose. 4. Replacement: Each mask needs to be replaced after about 4 hours of wearing to avoid affecting the child’s normal breathing. Suffering from respiratory diseases of the baby, it is recommended to wear a mask under the guidance of a doctor, so as not to wear a mask to make the children’s breathing resistance increases, resulting in the baby in danger.