Fever patients can drink fishweed water, which has a heat detoxification and weak antiviral effect, with a broad-spectrum antiviral drugs used in combination can shorten the course of the disease, improve the efficacy of treatment. Therefore, patients with fever can drink fishweed water. In addition, patients with fever are recommended to rest, drink more water, avoid smoking, avoid alcohol, diet, life should be regular, eat easy to digest, soft food, do not eat cold, hard, spicy, cold and irritating, greasy food, avoid overwork and cold to prevent other pathogenic bacteria from invading the human body and lead to serious infections, and at the same time, to keep the indoor and outdoor air circulation, so as to play the purpose of cooling down the temperature, so as to achieve the purpose of the treatment of the disease. The purpose of this is to cool down the body so as to achieve the purpose of curing the disease.