Most adults infected with EBV are asymptomatic, while a few may have fever, enlarged lymph nodes, sore throat, enlarged liver and spleen, and other symptoms. EBV refers to human herpesvirus, which is mainly transmitted through saliva. Most patients with EBV infection are asymptomatic, and some patients will develop infectious mononucleosis after infection. Infectious mononucleosis is caused by EBV, and patients will have symptoms of fever, usually at 38~40℃, which can last for days or weeks. The patient’s lymph nodes are also usually involved, with symptoms of enlarged lymph nodes. In addition, patients often have symptoms of sore throat and tonsillar exudate. Some patients are also accompanied by enlarged liver and spleen, skin rash and other symptoms. It is recommended that patients consult a doctor promptly when the above symptoms occur, and use the right medication under the doctor’s guidance to alleviate the discomfort of the body.