Pineapple eating the corners of the mouth pain there is no absolute quick solution, but in order to alleviate the pain in the corners of the mouth can be used to gargle with salt water, iodized glycerin wipe, medication and other methods. 1. Salt water gargle: pineapple in the pineapple enzyme, the oral mucous membrane tissue and the corners of the mouth will produce stimulation, so that the corners of the mouth to appear painful symptoms. In order to improve the pain in the corners of the mouth, you can use salt water to gargle, so that the salt water neutralizes the pineapple enzyme, thus reducing the damage to the oral mucosa and the corners of the mouth. 2. Iodized glycerin wipe: you can wipe iodized glycerin on the painful part of the mouth corner to promote the healing of the damaged mucous membrane tissue, in order to alleviate the symptoms of eating pineapple-induced pain in the corners of the mouth. 3. Medication: Pineapple contains special substances such as fruit acids, and some people may have localized allergies to the skin and mucous membranes after exposure to the special substances of pineapple, resulting in pain at the corners of the mouth. In order to reduce the pain of the corners of the mouth, you can follow the doctor’s instructions, take loratadine and other anti-allergy drugs. If the pain at the corners of the mouth is severe and cannot be relieved after taking measures, it is necessary to go to the hospital immediately for treatment, and the above medications need to be used as prescribed by the doctor.