The efficacy of montmorillonite powder is mainly for the treatment of acute and chronic diarrhea in adults and children; contraindications are allergies and constipation. Montmorillonite powder is mainly used for the treatment of diarrhea in the clinic, montmorillonite has a laminar structure and non-uniform charge distribution, on the digestive tract of viruses, germs and their toxins, gases, etc. has a strong fixation, inhibitory effect, so that it loses its pathogenic effect, to reduce the situation of diarrhea. Montmorillonite powder itself is directly extracted from natural montmorillonite, so there are rich minerals in itself, but also has a good adsorption effect, if taken in excess, it will cause constipation, so the general gastrointestinal function of poor metabolism of patients should be prohibited from using, allergic to the drug is prohibited. Drugs should be used under the guidance of a doctor.