Pineapple mouth pain can be relieved by gargling with light salt water, using lip glycerin or medication. Eating pineapple mouth pain is considered to be a symptom of contact lipitis, and is associated with organic acids, glycosides and bromelain stimulation contained in pineapple. The main way to relieve mouth pain at this time is shown in the figure. It is recommended that before eating pineapple, cut the pineapple into small pieces and then soak it in light salt water for a few minutes, which not only maintains the sweet and sour taste of pineapple, but also neutralizes a large number of organic acids in the pineapple, reduces the concentration of bromelain, and avoids eating pineapple after the symptoms of lipitis. If the mouth pain has not been able to relieve, should promptly seek medical attention.