First of all, it is an infectious disease, mainly caused by the EBV, common in pediatrics, children under 6 years of age, and clinical symptoms are often mild. Then look at the main symptoms: 1. Fever: usually lasts for a long time, mostly more than 5 days, with high fever prevailing. 2. Swollen lymph nodes: swollen lymph nodes in the neck are common, sometimes accompanied by pressure pain. 3, pharyngitis: sore throat, sometimes similar to the manifestation of tonsillar suppuration. 4. Hepatosplenomegaly: Generally, hepatosplenomegaly can be palpated about a week after the onset of the disease, and there are also cases of rapid enlargement of the spleen. At this time, it is necessary to be alert to the risk of spleen rupture, so avoid strenuous activities and bumping of the abdomen, and be gentle when palpating. 5. rash: the occurrence rate is low and it is polymorphic. The blood count is generally normal or high, with lymphocytes predominating, mostly >60%. 2, EBV detection: commonly used Ig-M antibodies for the acute phase of infection antibodies. 3, Ultrasound: enlarged lymph nodes in the neck and enlarged liver and spleen. The last thing is its treatment: there is no specific treatment for this disease. Most of them take symptomatic treatment. Chinese medicine treatment is not lost as a means of treatment for this disease.