Jujube residue was used to discuss the enzymatic hydrolysis conditions of cellulase and xylanase respectively. On this basis,using the multi-factor composite test design principle and analysis method,the most suitable conditions to get the appropriate proportion of soluble fiber and insoluble fiber was determined,as two enzyme concentration and reaction time were variable. The optimized conditions were as the follows: cellulase 0. 29%,xylanase0. 21%,reaction time 49. 23 min. Under this condition,the proportion of soluble fiber could be increased from6. 79% to 10. 15% to achieve the best ratio of 1∶ 3 of soluble versus insoluble fiber.