When you have a fever, it is recommended to take your temperature once in about 0.5-1 hour. If the body temperature is between 38.5-39.5℃, you need to take antipyretic drugs in time for treatment. 0.5 hours after taking antipyretic drugs, you need to measure the body temperature to see if the body temperature drops or gradually returns to normal. When the body temperature is above 37℃, the temperature should be measured after 1 hour or at any time according to your own self-perception, because the body temperature at 37℃ belongs to the state of low fever, and some people do not have any clinical manifestations when they have low fever, nor do they feel weakness in their limbs. However, as the body temperature rises, headache, dizziness and body aches can be felt. Therefore, if the body temperature is above 37℃ and you feel uncomfortable, you need to measure the body temperature in time to check whether the temperature continues to rise and give symptomatic treatment in time.