Usually due to the normal coagulation function of the human body, bleeding after injury will not bleed more than once, but if there is more than once, the possible reasons to consider are bleeding vessels are large, coagulation mechanism disorders, etc., roughly as follows: 1, bleeding vessels are large: coagulation mechanism can not completely stop the bleeding vessels, this situation requires debridement surgery, stitching or ligation of the ruptured vessels; 2, coagulation mechanism disorders: this The situation is more complicated, the first need to determine why the coagulation mechanism will have problems, whether it is thrombocytopenia, or the brittleness of the blood vessels is relatively large, determine the cause and then targeted treatment, the clinical results are more satisfactory. A similar situation is generally more urgent and it is not recommended that patients dispose of it by themselves, or they should go to the hospital to seek professional medical help.