This special focuses on bifidobacteria. Bifidobacterium is a beneficial bacterium in the intestine that regulates intestinal function and maintains the balance of the flora in the intestine. People will have bifidobacteria after birth, and these bacteria will accompany people for a lifetime. Domestic researchers have artificially cultivated bifidobacteria which have been put into mass production by Zhuhai Lizhu Pharmaceutical Group. The produced Lizhu Yule Capsules are widely used in the adjuvant treatment of diseases and the adjustment of intestinal function.