Repeated colds refer to colds that are too frequent, with some people catching colds several times a month, and are a manifestation of the subhealth state. According to Chinese medicine, people who have recurrent colds are mostly suffering from qi deficiency, which is caused by weakness of lung qi or lung spleen qi deficiency, loss of solidity of the surface guard, and weakened ability to resist invasion by external evil. Recurrent cold people in the absence of external symptoms (i.e. cold symptoms are basically healed) can choose the following formula for self-medication: Astragalus ginseng drink: Ginseng 20, Astragalus 10-15g decoction, 2 times a day. Modern pharmacological research has confirmed that Radix et Rhizoma Ginseng can enhance the phagocytic function of the reticuloendothelial system, improve the immune function and disease resistance of the body, and has anti-fatigue, anti-high temperature and other effects. Astragalus has the functions of enhancing the immune function of the body, anti-aging, anti-stress, improving the body’s ability to resist diseases and maintaining the balance of the body’s internal environment. Yu Ping Feng San: The ratio of Astragalus, Atractylodes and Fang Feng is 2:2:1. For children, 10g of Astragalus, 10g of Atractylodes and 5g of Fang Feng can be taken in water decoction twice a day. Adults can increase the quantity of the soup to benefit the qi and prevent colds. You can use 10 grams of Radix et Rhizoma Ginseng, 10 grams of Radix et Rhizoma Huaiyang, 5 grams of Radix et Rhizoma Fenghuang, and 3 grams of ginger to stew lean meat. Remember that the above formula must be taken when there is no cold, and as long as you insist on taking it for a period of time, you will definitely reduce the occurrence of cold greatly.