The definition of fever varies slightly in many literatures. We call it fever when the axillary temperature is higher than 37.5 degrees or the anal temperature is higher than 38 degrees. Most of the time, fever is associated with significant systemic symptoms, such as headache, dizziness, fatigue, muscle aches in the limbs, and chills. Common diseases that can cause fever in life are common cold, acute pharyngotonsillitis, acute gastroenteritis, lung infection, etc. Fever can be divided into infectious fever and non-infectious fever. Among the many diseases of infectious fever, according to the pathogens mainly include infections of viruses and bacteria, but also infections of rickettsia, mycoplasma, chlamydia, and parasites such as fungi, spirochetes, protozoa and helminths. Non-infectious fevers are most often seen in allergic diseases, connective tissue diseases, malignant tumors of various systems, as well as in physicochemical injuries such as pyrexia and massive burns. It is also seen in neurogenic fevers, such as cerebral hemorrhage and autonomic dysfunction. The point here is that fever is not necessarily a bad thing. Fever promotes the activation of the body’s immune function, and a moderate increase in body temperature can kill the invading viruses and bacteria. Therefore, after a fever appears, we do not need to panic, we need to be calm, pay close attention to the changes in body temperature and pay close attention to the appearance of accompanying symptoms, because the accompanying symptoms are very helpful in finding the cause of the fever. For example, in patients with sore throat, we must pay attention to whether there is suppuration of the tonsils; in patients with abdominal pain and diarrhea, we should pay attention to the possibility of acute gastroenteritis, probably with a history of unclean diet or abdominal cold. For patients with cough and sputum, we should pay attention to check chest X-ray or chest CT as much as possible to exclude organic lung lesions and avoid misdiagnosis. Fever is very consuming to the human body, and it is important to bring a lot of pain to the patient, such as the systemic symptoms caused by influenza, repeated high fever, and generalized muscle aches and pains, which only people who are sick can deeply experience. Of course, there are also some patients who have fever and do not feel significantly uncomfortable. In order to avoid complications, it is necessary to identify the cause as early as possible, give timely symptomatic treatment and improve the patient’s comfort. Since most fevers occur at night, it is highly recommended to have a small medicine kit at home to prepare the band-aids, alcohol, dressings, bandages and swabs that we usually need for colds, diarrhea, bumps and bruises. Here we will talk about how to deal with fever. First general treatment bed rest, replenish energy, correct water and electrolyte balance, encourage more fruit or drink more soup. Secondly, physical cooling with ice water or ice wet compress forehead and large blood vessels (groin, armpits, etc.), or under the head placement of ice bags, also can be used 75% alcohol to some warm water bath. If necessary, we can also take a hot shower, but we must prevent the symptoms from being aggravated by cold. This method is only suitable for pregnant women or those who are preparing for pregnancy, because it is not very operable and the effect is not reliable. Finally medication to cool down for fever we may take oral antipyretic and analgesic drugs, and for antipyretic and analgesic drugs we prefer acetaminophen tablets or ibuprofen extended-release capsules. For children we use the appropriate suspension preparations will be fine. For babies over two months of age we choose acetaminophen. For babies over six months we choose ibuprofen. For babies under two months of age, we prohibit any antipyretic or analgesic medication. For us adults, ibuprofen extended-release capsules can be used up to four times a day, and ibuprofen has a longer lasting effect than acetaminophen in reducing fever. We do not recommend alternating the use of two antipyretic drugs to reduce fever, nor do we recommend the use of hormonal drugs to reduce fever, such as dexamethasone. In the past, many clinical tablets such as Anacin, Depo-Provera and Ketamine were not recommended because they were compounded and contained aminopyrine, so they had a lot of side effects. If there is no single antipyretic and analgesic at home, we can also use compounded cold medicines, which are safe under normal dosage. Such as compound aminophenalkamine capsule, we usually hear the fast gram, sense of health, white plus black, Chen Gong Zaixin, etc. These drugs are roughly the same basic ingredients, mainly containing acetaminophen, chlorpheniramine maleate tablets, ibuprofen, amantadine, etc., is nothing but antipyretic and analgesic drugs, anti-allergy drugs, and antiviral drugs. The other drugs are well understood, the main role of anti-allergy drugs is to slow down the occurrence of runny nose, but there are drowsiness adverse reactions, so it is not recommended for people working at height and driving operators. If you don’t have the above mentioned drugs at home, but you have Chinese medicine, you can deal with it temporarily. The most obvious difference between wind-cold and wind-heat colds is the swollen and sore throat, which is a term unique to Chinese medicine. The most obvious difference between the two is the sore throat. If there is a sore throat, we call it a wind-heat cold, and we need to give Chinese medicine to clear the heat and detoxify the toxin, such as Lianhua Qingfei capsule, Shuanghuanglian oral liquid, Blue Scutellaria oral liquid, etc. On the contrary, we call it wind-cold cold and need to give pungent and warming medicines to relieve the symptoms, such as cold and fever granules, wind-cold cold granules and so on. Although both are colds and both have fever, the symptoms are different and so is the treatment. If there is clear tonsillar suppuration, that is, white discharge, this time it is necessary to give antibiotics to treat the cause of the disease, this time the simple reduction of fever will not solve the fundamental problem. Recurrent fever is also unstoppable. Therefore, it is imperative to give antibiotics in a timely manner, and we prefer second-generation cephalosporin or macrolide antibiotics. For most fevers, viral infections are the majority and are somewhat self-limiting, so there is no need to rush antibiotics, as this is likely to result in antibiotic abuse. It is highly recommended here to check the blood count at the hospital and then use them as appropriate according to the changes in inflammatory indicators. Finally, it is emphasized that oral medication is the safest and can achieve the same effect as intravenous infusion treatment. Many patients rush to infusion therapy when they have fever, not knowing that there are indications for infusion therapy. We must be prepared for recurrent fever. The purpose of our medication is to relieve the patient’s general discomfort and to improve the patient’s comfort, and it is impossible to break the law of things. If you have recurrent fever after our active family treatment, it is recommended to promptly seek medical attention for new crown nucleic acid testing and further examination to clarify the cause of the disease to avoid misdiagnosis and delayed treatment.