Abstract:In this study， the probiotic dietary fiber powder was the prepared， and 20 community bowel dysfunc－ tion volunteers were selected to participating in the experiment， to analysis the function of probiotics dietary fiber powder in bowel dysfunction people. After three months consecutive taking， the bowel function of volunteer had significant improvement. The intestinal motility of volunteers occur significantly increased（P<0.05）；thein－ testinal motility related blood indicators of volunteers occur significantly increased （P<0.05）；feces moisture， pH and fatty acid content of volunteers occur significantly increased（P<0.05）；intestinal flora Lactobacillus and Bifidobacterium increased significantly（P<0.05）， and E. coli， enterococci and Bacteroides number significant－ ly reduced（P<0.05）. During the experiment no adverse events occurred， the results show that the preparation is safe and effective probiotic dietary fiber powder was applicable.