Abstract: For studying the influences of probiotics on intestinal microflora in piglet,60 heads of about 7.5 kg "Duroc ? Landrace ? Large white pig"original breeding,were randomly divided into 2 groups,3 replicates in each group,each replicate 10 heads. The piglets were divided into the experiment group and control group, the control group was fed with basal diet, the test group was fed with basal diet +0.1% probiotic.Detecting clusters of piglet growth performance and intestinal flora. The results showed that probiotics could significantly reduce piglet diarrhea rate (P<0.05) and promote the growth of piglet.The results showed that Lactobacillus, Bifidobacteriub and Clostridium perfringens were inhabitants,while Escherichia coli and Enterococcus were not inhabitants. There was significantly less aerobes (P<0.05) and more anaerobes,especially Lactobacillus and Bifidobacteriub in the intestines from the piglet fed the diets containing probiotics than those in the control group (P<0.01). Probiotics significantly decreased in the number of Clostridium perfringens (P<0.05). Therefore, added with probiotic agent could effectively improve the intestinal microflora in piglet.

Key words: piglet; interstinal microflora; probiotic