Cold should be one of the most common diseases in daily life. Although no one takes colds seriously! But when we have a cold repeatedly, we need to pay attention to it, because it may be a warning signal from our body, warning us about the condition of our body. For the cold, we need to understand what types of cold there are: Chinese medicine based on the cause of the cold is divided into wind-cold, wind-heat and summer-heat type three, there are also differences in the use of drugs. 1, wind-cold type of cold manifested as the body feeling cold heavier, fever light, headache without sweating, pain in the limbs, nasal congestion, sound heavy, clear runny nose, cough, sputum white thin, mouth not thirsty, white tongue coating, treatment should be selected pungent warming relieving class of drugs, promote the lung to disperse cold. Chinese medicine can choose cold punch, Tong Xuan Li Lung, Xiao Chai Hu tablets, etc. Some rural areas with fresh ginger chopped and white onion a piece of boiled water, drink while hot, sweat slightly out of the disease can be self-cured. 2, wind-heat type cold manifested as heavy fever, slight chills, head swelling and pain, mucus or yellow snot from the nose, swollen and painful throat and cough, yellow and thick sputum, thirst, yellow or thin white tongue coating, it is appropriate to promote the lung and clear the heat, pungent and cool to relieve the surface, can be used silver forsythia antitoxin pill, mulberry cold tablets or small fast gram oral. 3, summer-heat type of cold is appropriate to clear the heat to dispel the summer heat, clear the air part of the heat, can be used Huoxiang Zhengqi punch or oral liquid. Western medicine classification of the cold, usually bacterial infection as well as viral sexy, as long as the nature of the cold. Only then can we determine whether to use antibacterial drugs or antiviral drugs. In fact, no matter what type of cold, it is caused by our daily improper protection and too weak physical condition. Simply put, repeated colds are a sign that the body’s immune system is not strong enough. Cold is the process of the body’s immune system fighting against the external environment and cold virus, and frequent colds are the warning light of low immunity. Immunity refers to the body’s ability to resist external attacks and maintain the stability of the internal environment. The air we depend on in our daily life is full of various microorganisms: bacteria, viruses, mycoplasma, chlamydia, fungi and so on. They can all become the pathogens of colds when our body’s immune system is not strong enough. This is the reason why colds keep coming back. To prevent the recurrence of colds, it is necessary to strengthen the body’s immune system. We usually need to do the following: 1. Exercise more, 30 to 45 minutes a day. Choose the intensity of exercise that suits you. 2, to ensure a good emotional state, more hobbies, happy mood, is also helpful to enhance immunity. 3, reasonable nutrition, balanced diet, pay attention to the supplementation of nutrients, especially vitamins and minerals. 4, regular life and living, do not often stay up late, do not smoke and do not abuse alcohol. Poor sleep is related to lower immune system function, so it is important to get enough sleep.