If the distribution of platelet width is low, there is usually no big problem if other test results are also normal, but if the distribution of platelet width is high, it needs to be taken seriously. 1. Platelet distribution width is one of the indicators in routine blood tests, and other indicators, such as white blood cells and red blood cells, need to be looked at at the same time. If the results of the rest of the tests are normal and there is no coagulation abnormality, a simple low platelet distribution width suggests that the platelet volume is uniform and does not require special attention. 2. However, if the width of platelet distribution is high, attention should be paid to it, indicating that the platelet volume is not uniform in size, which may be due to acute myeloid leukemia, megaloblastic anemia, chronic granulocytic leukemia and so on. Platelets are a type of cell in the blood, relatively small, with a diameter of only a few micrometers, formed by shedding fragments of cytoplasm from bone marrow megakaryocytes. The role of platelets is to aggregate to form blood clots, in addition platelets release substances that encourage vasoconstriction and blood clotting. If there is a wound in the body, a large number of platelets will gather at the rupture of the wound and can prevent a large amount of blood from flowing out. Patients should not judge or diagnose on their own based on a single test result, but should consult a doctor in a timely manner, who will analyze and diagnose the case according to the specific circumstances.