Acupuncture points for treating mouth ulcers include Laogong point, Jicang point, Hegu point, Lianquan point, Tongli point, Zhaohai point, etc. Acupuncture points should be selected according to the condition. Solid evidence: to clear heat and fire as a treatment for pain, you can choose Laogong point, Dicang point, Hegu point and other points. The Laogong point can clear the fire in the heart, and the Dicang point and Hegu point can clear and diarrhea the evil heat of Yangming. Deficiency: To nourish yin and reduce fire as a treatment method, choose Lianquan point, Tongli point, Zhaohai point, Lianquan point can nourish yin and reduce fire, Tongli point can nourish yin and clear the heart, and Zhaohai point can guide the downward flow of deficiency heat. Patients suffering from mouth ulcers should consult a doctor for diagnosis and treatment in a timely manner so as not to delay their condition, and treatments such as acupuncture need to be operated by a professional Chinese medicine practitioner.