Fever in seven-year-old children can be seen in respiratory diseases, gastrointestinal diseases, infectious diseases and other diseases, the treatment needs to be based on the cause, such as influenza children need to use oseltamivir phosphate, the course of the disease should be reasonable antipyretic. 1. Respiratory diseases: such as influenza, fever symptoms can occur, most have a history of epidemiological exposure, can be accompanied by fatigue, muscle aches and other systemic symptoms, such children need to be treated with oral antiviral treatment of oseltamivir phosphate, at the same time need to be reasonable in the course of the disease antipyretic, such as the body temperature of more than 38.5 ℃, the need to use ibuprofen and other drugs to reduce fever. If you consider the bacterial infection can be followed by amoxicillin clavulanate potassium anti-infection treatment. 2. Gastrointestinal diseases: such as infectious diarrhea, clinical fever can occur, mostly accompanied by diarrhea or vomiting symptoms, caused by bacterial infections need to use cefaclor or cefozoxime and other anti-infective treatment, the course of the disease need to be orally montelukast, zinc glycyrrhizate, etc. to alleviate the symptoms, and at the same time, reasonable antipyretic. 3. Infectious diseases: such as infectious mononucleosis, tuberculosis, whooping cough, hand, foot and mouth and other diseases, clinical fever can occur, can be under the guidance of the doctor to be rehydration, anti-tuberculosis, azithromycin anti-infective and other targeted treatment. All of the above drugs need to be used under the guidance of a physician, it is recommended to actively consult a specialist physician to guide the treatment.