There are more reasons for gum bleeding, specifically the following: 1, gum plaque, tartar produced in the oral environment, due to poor basic oral hygiene, easy to cause bleeding gums; 2, local gum irritation, such as gingivitis; 3, local allergy factors, such as dentin allergy more serious will cause bleeding gums; 4, gum trauma, such as contusion or fine fracture of the gums, will cause bleeding gums 5, endocrine changes in the body, such as pregnant women; 6, more serious physical diseases, diabetes, liver disease, kidney disease, cardiovascular disease, etc.; 7, smoking and drinking and other bad habits can also cause gum bleeding; 8, other external factors, such as certain physical diseases taking anti-coagulant drugs, similar to aspirin, etc., can easily cause gum bleeding.