The invention discloses an organic fertilizer specially used for acidified soil, which comprises: 15-30 parts of coking coal charcoal, 10-20 parts of attapulgite, 10-15 parts of bio-charcoal, 0.5-1 part of a bio-microbial agent, 0.5-1 part of a bio-enzyme agent, 8-15 parts of drainage oil, 10-15 parts of fruit dregs, 7-12 parts of lime powder, 20-30 parts of bentonite, 3-5 parts of shell powder, 20-30 parts of banana stalk, 20-30 parts of tea residue, 20-30 parts of papermaking waste liquor, 10-20 parts of an amino acid chelating liquid, etc. In the organic fertilizer, the coking coal charcoal, fruit dregs, shell powder, banana stalk, tea residue, papermaking waste liquor, soybean sauce residue and rapeseed cake are added, and through enzymolysis and fermentation effects of the enzyme agent and bio-microbial agent, macromolecule proteins in the components are decomposed into small-molecular peptides, and majority of organic substances are fermented and decomposed so as to supply abundant nutrients to the acidified soil, thereby significantly improving soil fertility, promoting quick growth of plants, and enhancing acidification resistance of the plants.