Three-year-old children with influenza A should pay attention to daily protection, and actively take medication under the advice of the doctor. If a three-year-old child has influenza A, he or she should maintain good living habits and work habits, keep a light and healthy diet, avoid staying up late, rest more and drink more water, exercise properly, strengthen the body, and do a good job of self-isolation and protection, avoid catching a cold, wash your hands regularly, pay attention to personal hygiene, ventilate the room and disinfect it on a regular basis, and avoid crowds of people. When your child has influenza A, you can use anti-inflammatory and anti-viral drugs such as oseltamivir phosphate granules, blue scutellaria oral solution, ibuprofen suspension, acetaminophen suspension drops and other anti-inflammatory drugs to treat the disease on the advice of your doctor, and if the symptoms still can’t be relieved, you should go to the hospital for examination and treatment in a timely manner. Regular vaccination of children is an effective means of preventing influenza.