Low maximum platelet aggregation rate AA often means that the hemostatic function of the human body is impaired, because platelets are blood cells responsible for hemostasis, with a variety of functions such as adhesion, aggregation, release, contraction, etc. Among them, platelet aggregation rate means that platelets can gather together to form platelet clots, thus playing a hemostatic role. When the platelet aggregation rate decreases, the function of platelets gathering together to form a clot decreases, and the function of stopping bleeding cannot be performed in a timely manner, which can easily cause bleeding symptoms in humans. The most common and serious disease is platelet anemia, which is caused by a decrease in the maximum platelet aggregation rate of AA. The number of platelets in such patients is normal, but due to the decrease in aggregation function, the patient often suffers from obvious bleeding symptoms, and female patients are prone to excessive menstruation.