During the New Coronary Pneumonia epidemic, it is necessary to wear a mask when meeting with roommates in shared rooms for health reasons. You can communicate with your roommate in advance to reduce the risk of infection by wearing masks on both sides in common areas such as the kitchen, balcony, and living room. In addition, contact with roommates should also be reduced, if there are things that need to be said in person, you can keep a distance of 1 meter from each other. Do personal cleaning and disinfection when you return from an outing, put your outside shoes outside the door, clean used masks, and then wash your hands properly and disinfect small objects that you have with you.