EBV (EBV) is a deoxyribonucleic acid virus, the body infected with the virus followed by the emergence of eb vca antibody, the normal value is generally <500copies/m, 750 belongs to the serious, may be related to nasopharyngeal carcinoma, African childhood lymphoma. 1. Nasopharyngeal cancer: Generally speaking, the occurrence of nasopharyngeal cancer is related to virus, especially eb virus, eb virus antibody can be detected in serum, which is manifested as nasal obstruction, headache, hearing loss, etc. Detection of eb virus antibody can be used for routine screening of nasopharyngeal cancer. 2. African childhood lymphoma: mainly occurring in children, Eb virus antibody is usually detected in the facial area, jaw, and the DNA nuclear antigen of EB virus is detected in biopsy, which should be timely consulted. EBV antibody 750, more serious, the emergence of EBV infection, should promptly go to the hospital, under the guidance of the doctor symptomatic treatment and antiviral therapy.