Platelet is the human body has the function of hemostatic blood cells, its normal number is 100-300,000/mm, platelet lower, the human body will increase the possibility of bleeding, the lower the platelet, the greater the risk of bleeding, the severity of bleeding will be greater. Our country stipulates that when the platelet count is lower than 30,000/mm, the possibility of the patient having spontaneous bleeding is very high, so it is generally stipulated that when the platelet count is above 30,000/mm, many patients can be left untreated, and regular clinical observation is required. If the platelet count is lower than 30,000/mm, treatment needs to be given, and the commonly used treatments include platelet transfusion therapy, which can rapidly increase the concentration of platelets in the patient’s body to achieve the purpose of hemostasis. In addition, platelet-raising drugs can be applied, such as recombinant human angiopoietin, which can promote the proliferation of megakaryocytes in the bone marrow and promote the release of platelets into the peripheral blood, thus increasing the number of platelets.