It is generally believed that the body temperature (anal temperature) more than 37.5-38.0 ℃ body temperature rise, in a sense fever is a defensive reaction of the body to improve resistance, some need to observe the special fever type, can help doctors make a correct diagnosis, but too high or too long fever damage to the body; parents do not have to be too nervous about the fever can not be taken lightly, need to be rational. At present, folk believe wrongly that fever has inflammation, need to use anti-inflammatory drugs, three elements (antibiotics, hormones, vitamins) all on! In fact, there are many reasons for fever, the so-called inflammation can be feverish, fever does not necessarily inflammation, infection is just one of the other major categories, non-infection including tissue necrosis, hemorrhage, hemolysis, drug reactions, tumors, central nervous system or endocrine dysfunction can also be feverish; because the child’s thermoregulatory center is not well developed, smaller stimuli can also cause hyperthermia, is the main reason why children are prone to fever and hyperthermia; this hyperthermia This kind of high fever does not mean that the condition is serious, it should be analyzed specifically, and the severity of the condition should not be judged accordingly. I. Situations that require attention for immediate medical attention: 1. Fever at age <3 months may be a precursor to serious illness; 2. Fever >5 days, usually not a common cold; 3. High fever temperature >40℃, and the effect of fever reduction within 2 hours by Merlin or acetaminophen is not satisfactory; 4. Behavioral changes in children such as not playing, not interested in things around, no appetite, not talking, etc.; 5. Fever >39℃ and lasting 24 hours after vaccination; 6. Accompanied by symptoms that have not appeared before, or a significant decrease in urine. Second, parents deal with fever precautions: 1, to provide a good cooling environment, do not use thick wrapping; 2, to ensure that the child sufficient rest time; 3, to provide as much water as possible, including mineral water, salt water, juice, etc., simple plain water is not appropriate; 4, with warm water bath cooling, do not use cold water, prohibit the use of alcohol rubbing bath; 5, drug cooling with ibuprofen (Merlin), acetaminophen (Tylenol or (pediatric antipyretic suppositories), the temperature should be > 39.0 ℃; 6, 24 hours after stopping the drug without re-fever, you can go out to play or school; 7, special circumstances promptly seek medical attention; 8, do not use the hand to measure the temperature, the deviation is too large, the measurement of temperature to anal temperature / oral temperature; 9, do not blindly use antibiotics / hormones / antipyretic agents, according to the needs of the disease.