Abstract:The extraction technology of jujube dietary fiber was optimized by biologic al enzymatic method，and the extraction temperature，pH value and dosage were optimized.The jujube dietary fiber jelly was prepared by using the extracted jujube dietary fiber as raw material，and a jujube dietary fiber jelly was prepared to protect the intestinal health.After sensory evaluation experiments，confirmed that jujube dietary fiber jelly with excellent sensory quality.By a 40-day experiment，It was confirmed that jujube dietary fiber jelly could significantly improve the bowel dysfunction of athletes，and it had a certain application value.