NOVELTY - Producing functional biological organic fertilizer and plant fiber via corn straw, involves: removing the leaf and peel from the corn straw; puffing and separating cut straw; screening puffed material to obtain main material part and coarse fiber part; mixing main material part with crushed leaf; mixing screened main material with assistant material; fermenting to obtain fermentation product and adding humic acid, antibiotic-peptide and Bacillus subtilis in fermentation product and mixing to obtain the fertilizer.    USE - For producing functional biological organic fertilizer and plant fiber via corn straw (claimed).    ADVANTAGE - The content of the organic matter is high and is useful for absorbing by the plant. The process can produce the plant fiber. The physical performance index of the fiber gets to the standard for manufacturing pulp corrugated base paper and the fiber can be used for manufacturing the packaging paper.    DETAILED DESCRIPTION - Producing functional biological organic fertilizer and plant fiber via corn straw, involves: (1) removing the leaf and peel from the corn straw: removing the straw from leaf and peel, crushing the leaf and peel for use; (2) cutting: cutting the straw removed from leaf and peel; (3) puffing and separating: puffing and separating the cut straw to obtain the puffed material; (4) screening and separating: screening the puffed material to obtain the main material part and the coarse fiber part; mixing the main material part with the crushed leaf in the step (1) to obtain the main material; (5) mixing and preparing: mixing the screened main material with the assistant material according to the ratio, guiding the mixture into the fermenting tank, where the ratio of the main material and the assistant material takes the carbon nitrogen ratio in the mixture as (20-25):1 as the standard; (6) fermenting: guiding the compound fungicide in the prepared mixture and fermenting, where the fermenting temperature is 25-50 degrees C, the pH is 7-10, having the micro aerobic fermentation in the fermenting groove, the time is not less than 14 days, obtaining the fermentation product, where the compound fungicide is composed of the fungicide powder as follows: Bacillus subtilis (50-70%), Bacillus megatherium (20-40%), Bacillus licheniformis (5-15%), the mass ratio of the material and the compound fungicide is 100:1; and (7) adding the function factor: adding the humic acid, antibiotic-peptide and Bacillus subtilis in the fermentation product, and mixing evenly to obtain the biological organic fertilizer.