Prevention of cold transmission: First, you should avoid contact with people who have colds, and if you must, it is best to wear a mask, because colds are still mainly spread by airborne droplets. Second, we should pay attention to indoor ventilation, should be ventilated for more than half an hour every day. Third, to increase the body’s resistance, resistance up the chances of a cold will be reduced. To increase body resistance, we should increase nutrition and exercise properly, and increase nutrition is to take in high quality protein, eat more vegetables and fruits, and try to diversify and enrich the diet. Exercise should be at least 3-5 times a week, each time should be more than 40 minutes, avoid going to crowded places during the peak of the cold, also can be vaccinated against pneumonia, flu vaccine, flu vaccine is generally in November every year.