NOVELTY - Producing special green organic potassium fertilizer, involves adding suitable flocculant into 7-aminocephalosporinic acid (7-ACA) fermented drug residues, centrifuging the mixture to obtain jelly-shaped precipitate, piling the mixture in an open environment, pulverizing and mixing the material, turning the pile for 3-5 times, using fermentation product as fermentation substrate A, adding organic potassium plant ash, mixing jelly-shaped precipitate, fermentation substrate A and aerobic microorganism inoculants, and repeating the above-cited operations.    USE - The method is useful for preparing special green organic potassium fertilizer.    DETAILED DESCRIPTION - Method of producing special green organic potassium fertilizer, involves (a) adding suitable flocculant into 7-aminocephalosporinic acid (7-ACA) fermented drug residues, and centrifuging the mixture to obtain jelly-shaped precipitate with water content of 85%, where the centrifugation step is divided into 4 steps chosen from (i) adding jelly-shaped precipitate (5 parts weight) into adjustor (1 part weight), (ii) blending the mixture uniformly, (iii) regulating the moisture content of the mixture to 50-65%, and (iv) adding aerobic microorganism inoculants to the mixture and blending the mixture uniformly, (b) piling the mixture in an open environment into long strip-shaped pile to be placed, allowing temperature inside the strip-shaped pile to increase to 55-70 degrees C within 24-36 hours, turning the pile for once every 24-48 hours by using the turning machine with the crushing function to remove moisture content in the pile, charging the oxygen into the pile, pulverizing and mixing the material, promoting reproduction and increase of temperature uniformly in fermentation flora, turning the pile for 3-5 times after 7-10 days, reducing the moisture content in the pile to 25-30%, and using fermentation product as fermentation substrate A that is product of first stage, (c) adding suitable amount of organic potassium plant ash or microbial additive to the mixture to obtain particles such that to form functional organic fertilizer or using the product as the fermentation additive, (d) mixing jelly-shaped precipitate (2 parts weight), fermentation substrate A (1 part weight) and aerobic microorganism inoculants uniformly, (e) repeating the operations in steps (b) and (c) for the mixture until the moisture content in the mixture reaches 25-30%, using the fermentation product as fermentation substrate B, and adding suitable amount of organic potassium plant ash or microbial additive to obtain particles such that to obtain functional organic fertilizer or using the product as the fermentation additive, (f) mixing jelly-shaped precipitate (2 parts weight), fermentation substrate A or B (1 part weight) and aerobic microorganism inoculants uniformly, (g) repeating the step (e), and (h) repeating the above-cited steps (b) and (c), or (d) and (e).