Chinese medicine believes that mouth ulcers belong to the category of mouth sores and mouth ulcers. And Niu Huang Dui Toxin Tablet has the effect of treating mouth sores, so it is useful to take Niu Huang Dui Toxin Tablet for mouth ulcers. Ox-huang detoxification tablets are composed of artificial ox-huang, andrographis, gypsum, rhubarb, scutellaria, platycodon, icicle, and licorice. It has the efficacy of cooling the liver and quenching wind (quenching liver wind by dispelling liver fire), clearing the heart and expelling phlegm, and clearing heat and detoxifying toxins. It can be applied to warm-heat diseases and children’s acute convulsions; high fever and irritability, opening up the mind; sore throat, mouth and tongue, carbuncle and furuncle. However, it should be noted that the use of non-solid heat should not be used; pregnant women, lactating women, infants and young children, and allergic to the product and the ingredients contained should be prohibited. It is recommended to use the medicine under the doctor’s diagnosis, after the use of this medicine, the symptoms of mouth ulcers still do not get relief, we should seek medical advice in a timely manner.