The expression “colds are good for you” is inaccurate. Depending on the severity of the cold, it is necessary to decide whether treatment is needed and whether it can promote the production of the body’s immunity. 1. People with severe cold symptoms, low immunity, causing complications, and even causing some damage to the body, and may leave sequelae, this cold is harmful to the body, the timely application of anti-cold medication to enhance the body’s resistance. 2. Cold symptoms are mild, only once the pathogen invaded the body, at this time their own resistance is strong, the body’s own immune system can produce the appropriate antibodies to resist the invasion of pathogens, and is conducive to the body’s immune system to produce memory, in the next encounter with the same pathogens, a rapid response to eliminate the virus. This is a way to promote the body to gain immunity against the virus. If the symptoms of cold and flu are severe, it is recommended to seek immediate medical attention, under the guidance of the doctor, rapid and standardized treatment to promote physical recovery.