Eating probiotics stomach pain is an abnormal performance, may be the adverse reaction of the drug, or originally suffered from gastritis or indigestion and other diseases lead to. 1. Probiotics mainly include lactobacilli, bifidobacteria, yeast and so on, which have the function of regulating intestinal flora, relieving constipation or diarrhea, improving intestinal function, promoting nutrient absorption, and improving human immunity. Probiotics usually have no significant adverse reactions, but if the dosage is too large or long time application may cause abdominal pain, diarrhea, constipation and other symptoms. 2. Probiotics should not be used by those who are allergic to probiotics, and should be used with caution by pregnant or lactating women. In addition, bismuth, antibiotics, carbon and other drugs should be avoided during the use of probiotics, which may affect the efficacy of probiotics. If the patient’s stomach pain symptoms are serious, or persist without improvement, it is recommended to go to the regular hospital in time, after clarifying the cause of the disease, targeted treatment under the guidance of the doctor, in order to reduce the adverse effects of the disease.