Bifidobacterium tetraurea is an intestinal probiotic, generally a course of treatment for about 5-7 days, depending on different disease conditions can be shortened or extended. Bifidobacterium tetrasporium tablets can regulate the intestinal microecology and inhibit the harmful pathogenic microorganisms in the intestinal tract, thus regulating the intestinal flora. The course of treatment may vary for different diseases, for example, for common acute gastroenteritis, it can be discontinued in 3-5 days, and can be discharged from the intestinal tract by itself after discontinuation, without affecting the normal intestinal flora. Some chronic enteritis may need to be applied for about 1-2 weeks. Long-term application is generally not recommended, so as not to affect the normal intestinal flora and lead to dysbiosis. Therefore, it is generally recommended to suspend Bifidobacterium tetrasporium tablets once the intestinal flora problem is solved. In addition, the application of this drug must follow medical advice, although the drug has relatively small side effects, but some patients may be intolerant clinically, do not use it blindly and indiscriminately.