The physiological functions of the human body are influenced by intestinal microbiota. To provide scientific evidence for the clinical effectiveness of ultra-micro decoction pieces of traditional Chinese medicine (specifically the effect of ultra-micro Qiweibaishusan on intestinal microbiota and enzyme activities), mice were rendered dysbacteriotic via administration of antibiotics and then treated with traditional Qiweibaishusan. The effects of the full amount, 1/2 the amount, 1/4 the amount, and 1/8 amount of ultra-micro Qiweibaishusan on the intestinal microbiota and enzyme activities were ...