Positive EBV antibody suggests that the body may be infected with EBV, and the clinical significance of different antibody types is not entirely consistent. The commonly used clinical antibodies against EBV are anti-cladding antigen antibody and anti-nuclear antigen antibody. Normal human body is negative for EBV antibody, and when EBV antibody is positive, it suggests that the body is infected with EBV. Anti-coatshell antigen lgM antibody has high sensitivity and specificity, and can be positive in the early stage of viral infection, while it can become negative during the recovery period, while anti-coatshell antigen lgG antibody is generally positive when clinical symptoms appear and persists for a long period of time; anti-nuclear antigen lgG antibody can also be positive in the early stage of infection, and its potency increases during chronic active infection and recurrence of infection, and gradually decreases after the infection recovers. When the infection recovers, the potency gradually decreases. When EBV antibodies are positive, the cause can be explained under the guidance of a doctor and the disease can be actively treated.