Bitter mouth, bad breath, etc. , can be used for clearing away heat and purging fire, reducing swelling and relieving pain, such as Xiao Wei powder. (2) Deficiency of kidney yin and inflammation of deficiency fire: the gums are slightly swollen and reddish, which can be treated with drugs that nourish yin and reduce fire, tonify kidney and strengthen teeth, such as Liuwei Dihuang Pill. (3) Sudden tooth pain can reach the forehead and both sides, and the gums are not red and swollen. Relieve the pain. (4) Toothache caused by dental caries: Of course, the pain caused by dental caries should be treated first. Of course, besides medication, self-cleaning in peacetime is also very important. Therefore, it is necessary to develop the habit of brushing your teeth in the morning and evening and gargling after meals. Before going to bed, you should not eat starchy foods such as sugar and biscuits, eat more foods that clear stomach fire and liver fire, such as pumpkin, watermelon and celery, and eat less acid.