The invention discloses a cellulose production method. The method includes the steps of strain culture, wherein the surface of a CMC-Na culture medium is coated with a collected strain source for culture, the culture medium is irradiated by using wave ultraviolet ray, and after irradiation, culture continues to obtain a cellulose strain; raw material preprocessing, wherein corn straw is crushed and subjected to high-temperature sterilization; fermentation, wherein the cellulase strain and production raw materials are added into a fermentation tank, parameters such as pH value, temperature andtime are adjusted, and sterile air is introduced into the tank by using an air purification compressor during the fermentation period; concentration and drying, wherein the pH value is adjusted afterfermentation liquid is diluted, then the fermentation liquid enters a vacuum filtering machine for filtering after oscillation of an ultrasonic oscillator, filtrate obtained after filtering enters anultra-filtration concentrator for concentration, the product is dried through a freezing dryer after concentration, and cellulose is obtained. In conclusion, the method has the advantages of being simple in process, high in raw material utilization rate, not likely to cause pollution, high in enzyme production efficiency, stable in enzyme production quality and the like.