The novel coronavirus is highly contagious and protection is the main measure to prevent infection by this virus. The first and most important thing to do is to stay at home as much as possible and avoid going outside to be completely isolated from the virus in order to effectively avoid infection. If you have to go out, try to avoid crowded places with poor air circulation, such as theaters, shopping malls, hot springs, public baths, swimming pools, stations, airports, docks, KTVs, Internet cafes, restaurants, etc., and do not take public transportation. Always remember to wear a mask when you go out, just wear a disposable medical mask and KN90 mask in an open area outdoors. If you go indoors, it is better to wear medical surgical masks, medical protective masks and N95 masks. Wear gloves, avoid contact with public facilities, keep a distance of more than 1 meter from strangers, and do not breathe directly face to face. If you find a stranger with abnormal behavior you should try to stay away, and after returning home you should wash your hands, change your clothes and take a shower in time. At the same time, pay attention to the disinfection of the home environment, use medical alcohol or diluted 84 disinfectant to wipe household items, and pay attention to morning and evening ventilation.