Drinking hot water when you have a fever can reduce your fever. Drinking more water will expel water from your body through sweating and urination. In the process of excreting water, it will take away part of the heat and germs, which can play a role in lowering the body temperature and reducing the symptoms. It is important to drink water in small amounts and not too much at once. When you have a fever, you can also relieve it by physically cooling the body, taking warm water or alcohol to wipe the palms of your hands, feet, back and other areas that are easy to dissipate heat, and then taking antipyretic and anti-inflammatory medication. Be careful to control the dosage of the medication, too large a dose may cause side effects; too small a dose may not achieve the therapeutic effect. It is normal to have fever for 3-5 days, and you should pay attention to keep a light, easy-to-digest diet, not too greasy. It is important to quit smoking and drinking, maintain a scientific and regular life, and avoid overexertion. The environment should be kept quiet, pay attention to ventilation, room temperature should not be too high, as well as pay attention to their own hygiene, etc.