Bifidobacterium preparations are generally not recommended for long-term use, the specific use of medication should follow the doctor’s instructions. Bifidobacterium bifidum preparation belongs to live bacteria preparation, belongs to the intestinal probiotics, can inhibit the growth of pathogenic bacteria, intestinal flora regulation, suitable for intestinal dysfunction caused by intestinal flora imbalance, including acute and chronic diarrhea, constipation and so on. It is recommended to consult a medical professional for the specific course of treatment. Bifidobacterium bifidum is contraindicated for those who are allergic to Bifidobacterium bifidum preparations. At present, there is no clear adverse reaction after oral administration of Bifidobacterium bifidum preparations, should avoid taking at the same time with antimicrobial drugs, it is recommended to stagger the time of taking separately. The drug is not recommended for long-term use, and the specific use of the drug should be under the guidance of a specialist physician.