An elevated platelet count is when the number of platelets in the peripheral blood exceeds the normal range. If the platelet count is mildly increased, it has no significant effect on the body. However, if the patient has hypertension, hyperlipidemia, hyperglycemia and other hypercoagulable states, even a mild increase in platelet count may induce thrombotic disorders, in which case antiplatelet medication is required, commonly used are aspirin, Polivyte, etc. Most of the abnormally high platelet count is seen in blood system diseases, the most common one is primary thrombocytosis, which is a myeloproliferative disease, due to genetic mutations that lead to unlimited proliferation of megakaryocytes, producing an excessive number of platelets, patients often thrombosis or bleeding symptoms, often need to apply blood cell separators to separate out the excess platelets, and later need to adhere to Maintenance treatment with hydroxyurea or maintenance treatment with interferon.