PURPOSE: A rice husk friber and a rice husk fiber paper using the same are provided to ensure relatively thickness of the paper due to air gap and to reduce drying energy during production process. CONSTITUTION: A rice husk paper of high bulk contains 1-50 wt% of rice husk fiber having cylindrical fiber and fiber of sawdust. The rice bran fiber is prepared by digesting rice husks or straw to separate digested liquid and residue, isolating silica from the isolated digested liquid; and obtaining fiber powder. The rice husk is treated with 150-200 g/m^3 of ozone after acetic acid treatment. The rice husk fiber has chemical composition containing 65-75% of carbon, 25-30% of oxygen, 0.1-0.5% of silicon, and 0.3-1% of calcium.
