The spleen is the lymphatic organ of the body and the blood bank of the body. Splenomegaly refers to the enlargement of the human spleen volume. These are the main factors that cause splenomegaly: 1. Mild splenomegaly: this phenomenon of mild splenomegaly is very common. This condition usually does not require treatment and requires regular review to check the blood cell situation and prevent other diseases from occurring; 2. Moderate splenomegaly: moderate splenomegaly is often associated with diseases such as systemic lupus erythematosus, chronic hemolytic jaundice, leukemia and liver cirrhosis. Go to the hospital to identify the cause and treat according to the cause; 3. Severe enlargement of the spleen: severe enlargement of the spleen is commonly associated with chronic granulocytic leukemia, chronic malaria, myelofibrosis, lymphoma and other diseases, at which time the cause of the enlargement needs to be identified and a treatment plan developed according to the cause. So the doctor said it is fine, probably because the patient is a mild splenomegaly. Mild splenomegaly can be left untreated for the time being, but it may progress further. Patients are advised to pay attention to regular review, and if there are uncomfortable symptoms, they should go to the hospital as soon as possible to avoid delaying the treatment of their condition.