Gum bleeding is one of the more common oral symptoms, less severe symptoms can be manifested as blood in the saliva when sucking, biting hard objects or brushing, more severe symptoms can be slightly irritated, can cause bleeding, even more than bleeding, or even spontaneous bleeding. The causes of gum bleeding are mainly manifested in two major aspects, as follows: 1, inflammatory bleeding: that is, periodontitis, gingivitis patients, physical examination can be seen in the patient’s poor oral hygiene, more plaque, tartar in the mouth, oral odor; 2, the oral manifestations of systemic diseases: such as leukemia, hemophilia, thrombocytopenic purpura, AIDS, etc., which should be given sufficient attention, by the relevant departments Give active treatment.