Most people with colds experience chills and coldness in the early stages, followed by a fever. However, some people, such as the elderly and weak patients or people with many diseases and poor immune function, only have symptoms of chills, but do not have a fever. This part of the patient also has nasal congestion, runny nose and other symptoms of upper respiratory tract infections, can be routinely used to relieve cough, phlegm, anti-flu medication for symptomatic treatment. There are also some people who are usually weak and cold, often feel cold, but also do not have a fever, mostly in the first recovery from a serious illness or postpartum, weak people. Some people do not have specific diseases, only the lack of yang qi, physical weakness, often show cold hands and feet, usually wear more, often easy to catch a cold, cold, can be used in traditional Chinese medicine to regulate the body, replenish yang qi. In addition, there are also some diseases that depend on whether the fear of cold is accompanied by other symptoms, and determine whether there is a related disease based on other symptoms.