Platelet pressure area of 0.31 is mildly high and needs to be observed in conjunction with platelet count. If the platelet count is normal, there is no need for special treatment and regular testing can be done, if the platelet count is abnormally high, timely hospitalization is required. Platelet pressure area is the product of average platelet volume and platelet count, the normal range is 0.11% to 0.23%, platelet pressure area changes are related to the number of platelets and the average volume of platelets. 1. Elevated platelet count: seen in myelodysplastic syndrome, chronic granulocytic leukemia, acute blood loss and other diseases. 2. Elevated mean platelet volume: seen in diseases such as primary thrombocytopenic purpura, acute leukemia, and megaloblastic anemia. Elevated platelet volume may also have other reasons such as staying up all night, infections, and so on. It is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.