NOVELTY - Producing ethanol using wood fiber raw material, involves: crushing wood fiber raw material and impregnating with dilute acid; dehydrating the material; blasting the material to obtain porous fluffy wet material of pentose; wet washing the pentose porous fluffy material to obtain pentose, cellulose and lignin material; preparing dry matter of cellulose and lignin material, hydrolyzing cellulase, to obtain enzymolysis liquid containing hexose; separating lignin/hexose solution; concentrating hexose/pentose solution, and fermenting pentose sugar solution using bacteria to obtain 95% ethanol.    USE - For producing ethanol from wood fiber raw material selected from corn rice, rice, or wheat (claimed); and also from paper pulp which is used for making paper, and in construction, textile and feed industry, where the ethanol is used as a combustion fuel.    ADVANTAGE - The method produces ethanol having high yield and high purity of 95%; is environment-friendly; and reduces energy consumption of the subsequent ethanol concentration.    DETAILED DESCRIPTION - Producing ethanol using wood fiber raw material, involves: crushing the wood fiber raw material impregnating with dilute acid at a temperature of 20-80 degrees C for 15 minutes; dehydrating the material at a temperature of 80-200 degrees C and pressure of 0.4-10 MPa for 1-35 minutes; blasting the material to obtain porous fluffy wet material of pentose; wet washing the pentose porous fluffy material at 10-100 degrees C by water to obtain pentose solution, cellulose and lignin material; preparing the dry matter of the obtained cellulose and lignin material by adding water at the temperature of 30-70 degrees C for 120 hours, hydrolyzing the cellulase at pH 1-7, to obtain the enzymolysis liquid containing hexose; separating out lignin from the obtained enzymolysis liquid, and obtaining hexose solution; concentrating the obtained hexose solution and pentose solution, and fermenting the pentose sugar solution using bacteria for 12-144 hours under the anaerobic condition at 2-45 degrees C, fermenting at pH 3-8 to obtain the fermented mash of ethanol; and obtaining ethanol having concentration of 95%.