Abstract: A fruit and vegetable product for curing oral ulcer, and a preparation method thereof. The fruit and vegetable product is made by mixing the following crude materials of different parts by weight: vegetables and/or fruits of 30-100 parts, food additives of 0-15 parts, probiotics powder of 0-5 parts, and recipients of 0-40 parts, the vegetables and fruits being cool and cold, cool and mild, and cold and mild; and the vegetables or fruits being cool, cold or mild in the theory of traditional Chinese medicine.