Take antiviral oral liquid or compound jinyinyinhua granules, as well as plate blue root granules can prevent the flu fever. You should eat a light diet, don’t eat spicy, greasy and stimulating food, drink more water, exercise properly, go to less crowded places during the flu season, and eat mainly a liquid or semi-liquid diet to prevent colds. The cause of cold and flu is usually caused by excessive heat in the body, seasonal exchange, and wind and cold, but without heat in the body, cold and flu will not occur or will be less likely to occur. During the flu season, you can also take anti-flu drugs to prevent colds and fevers. The drugs commonly used to prevent influenza A and B are oseltamivir phosphate capsules or oseltamivir phosphate granules. For people with poor body resistance, such as children and elderly people, flu vaccine can be given to prevent the occurrence of flu.