According to the different mechanism of action of hemostatic drugs, they can be divided into the following categories of drugs, such as antifibrinolytic drugs, drugs acting directly on blood vessels, and drugs promoting the activity of coagulation factors. 1. Anti-fibrinolytic drugs: Anti-fibrinolytic drugs include tranexamic acid or tranexamic acid. 2. Drugs that act directly on blood vessels: These drugs usually include carbachol, posterior pituitary gland hormone and so on. The principle of action is to make the smooth muscle of blood vessels contract so as to achieve the purpose of hemostasis. 3. Drugs that promote the activity of coagulation factors: these drugs include vitamin K or thrombin. When bleeding tendency occurs, it is recommended to go to the regular hospital in time for examination to clarify the cause of the disease, and under the guidance of professional doctors for medication.