The hemostatic needle has a relatively rapid hemostatic effect, but there is no clinical hemostatic injection for a few days can completely stop bleeding. The time to apply hemostatic needle to produce hemostatic effect varies for different causes of bleeding, in most cases 3-7 days can play a better hemostatic effect, if you want to completely stop bleeding, you need to actively treat the primary disease. 1, traumatic bleeding: If the patient is due to trauma resulting in vascular injury or surgical incision bleeding, the application of hemostatic drugs can play a hemostatic role after 2-3 hours, for the wound Patients with deeper and more bleeding need to be injected with hemostatic injection for 2-3 days. At the same time, we need to pay attention to protect the wound, prevent infection and avoid re-rupture of the wound bleeding, generally 3-7 days after the wound healing, can achieve complete hemostasis effect, do not need long-term injection of hemostatic needle; 2, vaginal bleeding: after abortion or normal delivery of female patients, if the uterus contraction weakness, may lead to the occurrence of postpartum bleeding, at this time, you can apply contraction, usually a few minutes to achieve hemostasis The effect is usually achieved within a few minutes. For women with long menstrual periods and excessive menstrual flow, hemostatic minerals can be applied to stop the bleeding in about 3 days. For patients with uterine fibroids and endometriosis, tranexamic acid and injectable hemagglutinin are commonly used, usually injected for 3-5 days, to regulate hemostasis, but only to relieve vaginal bleeding, patients need to actively treat the original disease to completely stop bleeding; 3. Gastrointestinal bleeding: growth inhibitors, norepinephrine, serotonin hemagglutinin, vitamin K1 and other hemostatic drugs are often used, usually After 3-5 days of hemostatic treatment, the patient’s condition is stable, timely surgical electrocoagulation hemostatic treatment, in order to obtain a better hemostatic effect; 4, coughing blood: such as tuberculosis patients with coughing symptoms, after the injection of hemostatic drugs, most patients 3-4 days coughing symptoms can be relieved, if the condition is serious, will continue to coughing symptoms; 5, hematological diseases bleeding: such as leukemia, aplastic anemia, etc., will also make patients appear serious bleeding, at this time, the use of hemostatic injection, can only play the role of temporary relief of bleeding, the need for cause-specific treatment, in order to effectively avoid the re-occurrence of bleeding.