1, if there is usually general trauma, bleeding very little and can be quickly clotted, that can generally rule out the problem of systemic diseases 2, if only oral bleeding, more or gingivitis or periodontitis problems, generally do not need to take drugs, in regular hospitals or clinics, do periodontal therapy, you can use mouthwash. 3, periodontal treatment is a series of oral treatment in general, simple bleeding a scaling (supragingival cleaning) can be controlled, complex periodontitis also need subgingival cleaning or root surface leveling and other treatments.