A gauze mask which can be worn with one hand includes a mask body, a nose clip member, and a chin pressing member. The mask body is formed with a covering space to cover user's mouth and nose. Around the inner periphery edge of an opening of the mask body is disposed an adhesive layer which enables the gauze mask to be adhered around the user's nose and mouth. The nose clip member and the chin pressing member allow the gauze mask to be firmly positioned on the user's face. The gauze mask is made of breathable material, or the gauze mask can also be made of non-breathable material but is equipped with a filter, so as to allow for air exchange between inside and outside of the gauze mask.