Mouth sores can be treated with medicines such as Rehabilitation New Liquid and Chlorhexidine Mouthwash. 1. Rehabilitation New Liquid: It is a kind of American cockroach extract, which has the effect of nourishing yin, regenerating muscles, and facilitating blood circulation, etc. It has an aromatic odor and is non-irritating, which is suitable for the treatment of mouth sores, and can promote the healing of mouth sores. Adverse reactions are not clear, note that allergic to the product and pregnant women are prohibited. 2. Chlorhexidine mouthwash: can fight against most bacterial and anaerobic infections in the mouth, effectively used to prevent secondary infections of mouth sores, is not recommended for long-term use, the general use of medication is not more than a week, easy to lead to tooth staining. In addition, mouth sores can also use ice boron powder, watermelon cream, cidadeine iodine tablets and other drugs, must be under the guidance of a doctor to use medication, avoid private medication, so as not to produce adverse effects.