Gum bleeding and bitter mouth may be caused by the following: First, poor oral hygiene, because there is no serious brushing and rinsing, so that there are a lot of food residues, bacteria, tartar on the surface of the tongue and teeth, these substances on the one hand will stimulate the gums, resulting in red and swollen gums, brittle texture, easy bleeding, on the other hand, these dirty things in the mouth will spontaneously corrupt, produce odor, there will also be the phenomenon of bitter mouth. Secondly, the body is caused by fire, due to the stomach fire or liver fire, causing the gums to be red, swollen, easy to bleed and have bad breath, commonly due to long-term consumption of greasy, indigestible food or the patient’s own poor digestive function, food in the stomach for too long, causing the stomach fire caused by the phenomenon of bitter mouth and bleeding gums. In addition, if the patient is depressed, sulking or irritable for a long time, resulting in liver fire, it will also cause the above symptoms.