A positive EBV antibody IgG only indicates a history of EBV infection. The EBV IgG antibody positivity rate in our children aged 3-5 years is 90%, but most of them are asymptomatic. Those who are symptomatic have only mild manifestations of pharyngitis and upper respiratory tract infections. However, recurrent EBV infections also increase the risk of nasopharyngeal cancer. Therefore, it is important to pay attention to strengthening physical exercise and improving your resistance in general. Because viral infections are mostly self-limiting diseases, they will heal themselves as the body’s resistance increases. Therefore, it is important to improve body resistance. If it is a symptom, it is recommended to visit the hospital in time for relevant further examination.