· If you have a cold, many people will use the method of diet. Since the hot fever and cold symptoms such as dry throat, cough and yellow phlegm, you should use cold watermelon, pear and other fruits, and dandelion and other heat-relief drugs. Tea drinking for diet. The one that most directly undermines these conclusions is:. ['In the early stages of a cold, the cold and evil people invade the human skin and body surface. You can drink a bowl of brown sugar ginger soup, gingerol in ginger, and ginger one can sweat and expel evil spirits.', 'Cold food has the effect of clearing heat and detoxifying, and some of them can supplement the body with necessary proteins and vitamins.', 'I got a hot cold. The correct way is to clear the heat and give the evil air a way out.', 'The extensive use of cold medicine and food will cause qi and blood to stagnate, which will prevent the discharge of wind-heat diseases.']