Commonly used sprays for treating mouth ulcers include watermelon cream spray, stomatitis spray, and open-throat sword spray, which work differently from person to person, and there is no one better. 1. Watermelon Cream Spray: the main ingredients are watermelon cream, forged borax, cypress, yellow dock, Yam bean root, shoot dry, Zhebeimu, Qingdai, ice, etc., the main role is to clear away heat and detoxification, swelling and pain, can be used for the treatment of gingivitis, oral ulcers, sore throat, and so on. 2. Stomatitis Spray: It is composed of honeycomb, dandelion, saponaria, and lonicera. It can be used to treat stomatitis, mouth ulcers, pharyngitis, etc. 3. Open Throat Sword Spray: the main ingredients are octopus, sanguinaria, cicadas, menthol. It can be used for sore throat, dry mouth, bitter mouth, swollen and painful gums caused by heat in the lungs and stomach, as well as oral ulcers, recurrent mouth sores with the above symptoms. Different drugs have different effects and adverse reactions, it is recommended to use under the guidance of a doctor.