At present, the main drugs recommended in the market for treating cough after infection or cold are huifenning and Asme capsules. One of the two drugs can be well controlled. In the dietotherapy of cough after a cold, you can stew tremella with rock sugar lily and rock sugar Sydney to relieve cough after a cold, which can relieve symptoms well in a week or so. If you have a cold, you can eat warm fruits, such as durian, cherry, litchi, longan, pineapple, carambola, pomegranate and jujube. If you have a cold, you can eat some cold fruits, such as watermelon, kiwi, banana, mangosteen, apple, grapefruit, mulberry, plum, strawberry, loquat and pitaya. At the same time, you can also eat cool vegetables, such as green leafy vegetables, cool ones, and mung beans, some of which are bitter. Lentil vegetables, bean sprouts, mustard greens, pumpkins and garlic seedlings are all temperate vegetables that can be eaten in moderation when you catch a cold in Korea. We should be alert to the progress of the disease to acute bronchitis. Pneumonia or cough symptoms are the precursor symptoms of some acute infectious diseases, and the delay in diagnosis and treatment is becoming more and more serious, so we need to see a doctor in time. Some people think that a cold is a self-healing disease. After getting sick, there is no need to take intervention measures to spread the infected bacteria and viruses in the body, promote the continuous development of the disease, and cause symptoms such as fever, headache, listlessness and loss of appetite. When a patient catches a cold, the immune system may be damaged, the immunity may be reduced, and the number of patients will be reduced, resulting in a decrease in resistance, making them vulnerable to reinfection by pathogens such as bacteria and viruses, and making patients complicated with other diseases. Long-term impact injury of high-speed airflow on agriculture and mucosa may lead to inflammation and swelling of throat. At the same time, when the cold persists repeatedly, due to the accumulation and reproduction of pathogens in the body, with the circulation of blood, it may invade the whole body, causing complications such as viral myocarditis, pneumonia, meningitis and pneumonia. When patients catch a cold, they must take effective measures to treat them in time, so as not to cause other symptoms and delay their illness. In daily life, they should pay attention to a reasonable diet, drink more water and exercise actively.