Finger broken by the knife has been bleeding can be through the pressure bandage and other methods to stop bleeding; if the blood flow has been more than, need to rule out hemophilia and other coagulation disorders, in addition, due to the knife belongs to the metal products, may also need to prevent tetanus. If the finger is cut by the knife and keeps bleeding, you can use a piece of clean gauze to stop bleeding by local pressure; or after disinfecting the wound locally, use Yunnan Baiyao hemostatic powder to stop bleeding; if the blood keeps bleeding, you can try to compress the arteries on both sides of the finger to stop bleeding. If the blood flow has been more than, also need to consider whether there is hemophilia and other coagulation disorders, this situation needs to go to the hospital to improve the coagulation function test and other related tests. Since the knife is a metal product, the patient needs to be injected with tetanus antitoxin within 24 hours to prevent the infection of Clostridium tetani. If the finger is cut by the knife and keeps bleeding, after putting pressure on the bandage, the patient should consult the doctor promptly for treatment.