The main ingredient is Huang Hua, and the other ingredients are Shan Yin Hua, Lian Qiao, and Thornbush, etc. The main effect is to clear heat and detoxify, reduce swelling and pain, clear the throat, and ventilate lung heat. The main effect is to clear away toxins, relieve swelling and pain, clear the throat, and relieve heat. There are many reasons for mouth ulcers, related to mechanical injury, basic diseases, immune dysfunction, neurological and mental factors, and also vitamin and trace element deficiencies. So for mouth ulcers, the key is to find the cause in order to prevent recurrence. There are more topical treatments, such as topical hormone or antibacterial treatment, which can promote repair, healing and prevent infection. The Chinese medicine includes compound a branch of yellow flower spray, bulk, containing rinse, etc., which need to be used properly under the guidance of doctors.