Throat redness and fever may be acute upper respiratory tract infection, acute tonsillitis and other causes, need to address the cause, pay attention to rest, if necessary, with ibuprofen and other drugs. 1. Acute upper respiratory tract infection: airborne viruses such as influenza virus inhalation leads to acute inflammatory reaction of the mucosa of the upper respiratory tract, the mucosa of the throat is congested and edematous, and as an exogenous pyrogen causes an increase in body temperature. This situation needs to pay attention to rest, avoid exertion, maintain indoor air circulation, drink more hot water; body temperature of 38.5 ℃ or more can be symptomatic use of ibuprofen, acetaminophen and other non-steroidal anti-inflammatory drugs treatment, if necessary, the application of acyclovir, oseltamivir and other antiviral drugs treatment. 2. Acute tonsillitis: Bacteria, viruses and other pathogens infecting the tonsils cause an acute inflammatory reaction of the tonsils, which are congested and edematous, and are even accompanied by suppuration. It is necessary to pay attention to rest, prohibit spicy and stimulating food, drink more hot water; the application of azithromycin, ceftazidime, amoxicillin and other antibacterial drugs treatment. All of the above drugs need to be used under the guidance of a doctor. Throat redness and fever may be related to a variety of factors, it is recommended to consult a doctor to clarify the diagnosis.