If your gums bleed regularly, it is usually due to gingivitis or periodontitis occurring in your mouth. Gingivitis and periodontitis are chronic inflammatory diseases of the gums, and their initiating factor is mainly tartar, which is formed by plaque mixed with inorganic material over a long period of time by calcification and attached to the surface of the teeth. Tartar can be long-term persistent stimulation of the gums to produce inflammation, which will make the gum tissue red, swollen, congested, and the submucosal blood vessel wall becomes brittle, in the encounter of mechanical stimulation or temperature stimulation, it is possible to rupture the blood vessels and lead to bleeding gums. Gum bleeding often occurs when chewing on apples, drinking hot or cold water, or when brushing or rinsing, in which case a full mouth cleaning and subgingival scraping should be performed.