Abstract: Xylanase is one of the most important enzymes for industry application, which has a wide range of applications, such as pulp and paper industry, food, feed, medicine and biotransformation.Microorganism fermentation is the major approach to produce Xylanase.This paper reviews the research progress on the aspects such as the breeding of high-yielding bacterial strain for Xylanase and the production of Xylanase by microorganism fermentation, and finally looks into the distance to the research directions and prospects on the production of Xylanase by microorganism fermentation.