In daily life, some parents are worried about their children’s cold and fever, so they use certain fever-clearing and detoxifying herbs orally to their children from time to time to prevent cold. Among the herbal medicines for clearing fever and detoxification, Banlangen is the most familiar to the public, and there are few parents who prefer Chinese medicines such as Qingkailing granules and Jian’er Qingliang. Even some kindergartens also give all children Pan Lan Gen flush without medical advice and without informing parents. This shows that Banlangen has been treated as a kind of health care product, and the idea of taking oral Banlangen to prevent colds has been deeply rooted in people’s minds. The child, male, 5 years old, came to our department for several months with recurrent abdominal pain and asked to do the treatment of winter disease and summer treatment of three volt paste. The parents complained that the child had frequent tonsillitis due to weakness, so he often drank Banlangen or Qingkailing granules to prevent illness, and sometimes he would drink a few packets of Banlangen to prevent “fire” after eating junk food that is easy to “get on fire”. The child will also drink a few packets of Banlangen to prevent “fire. In summary, most of the children who came to our hospital this year for treatment of recurrent abdominal pain were suffering from intestinal spasms, and some were suffering from gastritis due to Helicobacter pylori infection in the stomach, like this 5-year-old boy who had cold abdominal pain due to frequent consumption of cold Chinese medicine. The pharmacology of Banlangen Banlangen is bitter-cold in nature and has the function of clearing heat and detoxifying, cooling the blood, and benefiting the throat. Modern pharmacological research has confirmed that Panax quinquefolium has an inhibitory effect on a variety of bacteria and viruses, and its effect is equivalent to the broad-spectrum antibacterial drugs in Western medicine. It is often used for viral colds with fever and sore throat, or in the early stages of certain infectious diseases. Although its side effects are mild, excessive or prolonged use is prone to stomach pain, loss of appetite and other indigestion symptoms. Therefore, it is contraindicated for those who have a weak body without real fire and heat toxicity, and cautioned for those who have a cold spleen and stomach. It is recommended for treatment and not for preventive use. If your child has a sore throat or a fever with a low temperature and is in good condition, it is best not to take Banlangen or other herbal remedies to clear the heat and detoxify the body for more than 3 days if it is not convenient to come to the hospital. How to prevent cold properly? (1) Adopt healthy lifestyle habits, balanced diet, adequate sleep, moderate exercise and avoid passive smoking; (2) Close contacts of common cold may be infected, so pay attention to relative isolation; (3) Hand washing is an effective way to reduce common cold; (4) Wear a mask during the common cold prone season and go to less crowded public places; (5) Dress modestly, avoid too much, insist on Outdoor activities, open windows to sleep, and use physical exercise methods such as water baths, air baths, sunbathing, and gymnastics for infants and children to enhance physical fitness.