Whether low platelet distribution width is dangerous or not should be combined with other indicators such as white blood cells, platelet count, etc. If only the platelet distribution width is low, it is generally not dangerous. 1. If other indicators such as white blood cells and platelet count are normal, and only the platelet distribution width is low, it is generally not dangerous. Low platelet distribution width alone has no clinical significance and does not require special attention. 2. If other indicators, such as platelet count, are significantly reduced, low platelet distribution width is considered to be caused by abnormal bone marrow hematopoietic function and other diseases, which can be seen in aplastic anemia, acute leukemia and so on. Therefore, whether low platelet distribution width is dangerous or not should be viewed in conjunction with other indicators, and it is recommended to go to the hospital in time, identify the cause of the disease under the guidance of the physician, and give corresponding treatment and treatment.