Fever refers to anal temperature over 38℃ or oral temperature over 37.8℃. General cold and fever can be observed at home care, take antipyretic drugs, more fluid, more breast milk for children under 6 months, more than 6 months can drink milk, water, but also drink the third generation of oral rehydration saline. 1, antipyretic drug selection (cross-medication is not recommended): 1) Tylenol can be repeated every 4?6 hours, no more than 4 times every 24 hours, suitable for children over 3 months old. Please refer to the following table for the dose of Tylenol: 2) Merlin can be repeated every 6 or 8 hours, no more than 4 times every 24 hours, for children over 6 months of age. Please refer to the following table for the dosage of Merlin: 2. When to use antipyretic drugs? Fever is a manifestation of the immune system fighting infection and is helpful for disease recovery, so antipyretic medicine is not necessary, and using antipyretic medicine just makes your child feel more comfortable. 1) If your child has a fever, but can eat and play, and is in good spirits as usual, there is no need to rush to take antipyretics in this case. A body temperature of 39℃ or less is relatively safe, but consider taking antipyretics if it exceeds 39℃. (2) If the child obviously feels uncomfortable, you can give antipyretic medicine even if it does not reach 38.5℃. 3) If your child has a fever after falling asleep, there is no need to purposely wake your child up in order to take antipyretic medication as long as he or she is sleeping peacefully and is not irritable or crying. If you are really worried, you can take the child’s temperature from time to time, but do not affect the child’s sleep. It is recommended to use a far-infrared thermometer to measure the temperature at the temple position. 3, which fever reduction methods are not recommended: not recommended warm water or alcohol rubbing, not recommended anti-fever patches, not recommended to cover sweat, etc.. But every day can be normal bath. When the fever temperature rises, the baby’s hands and feet are cold and may feel cold, so you can add some clothes or cover with a quilt. After the fever has gone down (whether naturally or with antipyretic medication), the child may get hot and sweaty, so take off two pieces of clothing and cover with a thin blanket. Everything is based on the child’s own comfort. 4, which cases of children with fever need prompt medical attention: 1) children under 3 months of age anal temperature greater than 38 ℃. (2) Children over 3 months of age who meet any of the following conditions also need medical attention: (3) Children 6 months of age have an anal temperature ≥ 38.3°C and children over 6 months of age have an anal temperature ≥ 39.4°C; for children of any age with recurrent fever and a body temperature over 40°C; children within 2 years of age with a fever lasting for more than 24 hours; children over 2 years of age with a fever lasting for more than 72 hours; children who seem very uncomfortable and is lethargic or irritable and still appears ill after the fever has subsided; is accompanied by other symptoms such as a stiff neck, severe headache, severe sore throat, severe earache, unexplained rash or recurrent vomiting, diarrhea, difficulty breathing, cyanosis of the lips or nail bed; has signs of dehydration, such as dry mouth, decreased skin elasticity or significantly reduced wet diapers and is unable to rehydrate; has had convulsions (lasting longer than 2?3 minutes,) feels severe; occurs twice or more in a row); has immune system problems or is taking hormones, etc.; parents feel that the child’s condition is intensifying.