Tummy pain, mouth with clear saliva to consider whether it is caused by gastric diseases, common chronic gastritis, gastric ulcer, etc., some symptoms are not typical, acute gastroenteritis will also appear when the stomach pain, increased secretion of salivary glands. It is recommended to go to the local hospital regular gastroenterology examination, according to the doctor’s examination results of the rational use of drugs, you can use drugs to inhibit gastric acid, if necessary, can do gastroscopy, is conducive to a clear diagnosis. Normally, the diet try to light and easy to digest food, do not eat spicy stimulation, cold and hard food, try not to drink strong tea, diet should be regular, it is best to quit smoking and drinking, do not stay up all night, are beneficial to the body.