Low platelet ratio can be seen in a variety of situations. 1, suggesting that platelet production is not active, if accompanied by a decrease in other blood cells, indicating that the bone marrow hematopoietic function is poor, commonly found in megaloblastic anemia, aplastic anemia and other diseases; 2, suggesting that there is bleeding: if the patient’s platelet count at the same time, indicating that the platelets are consumed, the patient is in the state of hemorrhage; 3, if only large platelets in blood routine If only the large platelets in the blood routine are low, generally there is no clinical significance. So the specific reasons for low platelets should be analyzed in the context of the actual situation.