This utility model discloses an arterial hemostat, which includes a pressure plate, a fixing component, a hemostatic component, and a coagulation-promoting layer. The pressure plate and the fixing component form a receiving space. The hemostatic component is mounted on the pressure plate, and a coagulation-promoting layer is provided at one end of the hemostatic component facing the receiving space. By adjusting the hemostatic component, the coagulation-promoting layer is brought closer to the patient's puncture site to apply pressure and stop bleeding at the puncture site. This utility model solves the problem of long compression hemostasis time after arterial puncture by providing a coagulation-promoting layer at the adjustment part.