After home isolation, attention should be paid to the cleaning and disinfection of furniture and commonly used items: 1.Frequent large size cleaning frequently touched items every day, such as bedside tables, tables and chairs and other furniture. Clean and disinfect bathroom and toilet surfaces at least once a day; 2. Wash tableware with detergent and water after use; 3. Store and wash clothing, bed sheets, towels and other items separately from others, and then dry them completely; 4. Disinfect indoor surfaces of relevant objects in time after guests (health status unknown) visit, and choose effective disinfectant (500mg/L-1000mg/L chlorinated disinfectant) Wipe; 5, indoor ventilation, when opening the windows in winter, to avoid large temperature differences between indoor and outdoor and cause colds.