If a patient with novel coronavirus infection with pneumonia is found at home, close contacts should be isolated at home to prevent the spread of the disease. Specific environmental requirements are as follows: 1. Place close contacts in a single well-ventilated room and refuse all visits; 2. Restrict activities of close contacts, minimize common areas with family members’ activities, and ensure common areas (e.g., kitchen, bathroom, etc.) are well ventilated; 3. Recommend the use of chlorinated disinfectants or peracetic acid disinfectants, and clean and disinfect items frequently touched by family members daily.