NOVELTY - A biological organic fertilizer composition, comprises: 10-45 parts by weight (pts. wt.) plant ash, 5-20 pts. wt. furfural slag, 20-50 pts. wt. wet cow dung, 10-40 pts. wt. wet chicken manure, 5-20 pts. wt. edible fungi slag, 0.01-0.05 pts. wt. yeast and 0.1-0.3 pts. wt. functional bacteria.    USE - As biological organic fertilizer composition (claimed).    ADVANTAGE - The composition is capable of effectively improving the organic matter in soil and repairing damaged in successive years for soil environment, improve the quality of soil, and improve crop yield.    DETAILED DESCRIPTION - A biological organic fertilizer composition, comprises: 10-45 parts by weight (pts. wt.) plant ash, 5-20 pts. wt. furfural slag, 20-50 pts. wt. wet cow dung, 10-40 pts. wt. wet chicken manure, 5-20 pts. wt. edible fungi slag, 0.01-0.05 pts. wt. yeast and 0.1-0.3 pts. wt. functional bacteria; where 6-13.8 pts. wt. plant ash contains 1.5-3 pts. wt. phosphorus pentoxide, weakly alkaline pH value is 7.8-8.5, the furfural residue cellulose is more than 43.8%, lignin is more than 38.4%, crude protein is more than 3.1%, the total content of nitrogen, phosphorus and potassium is not less than 1.6%, the pH value is 4, belonging to the sulfur acid material, the edible fungi slag water content is less than 25 wt.%, and organic matter content is more than 50 wt.%. An INDEPENDENT CLAIM is included for preparing the composite of ferment biological organic fertilizer, involving: (1) mixing uniformly plant ash and furfural residue, stirring, adjusting the pH value of the mixed material to 6.5; (2) mixing wet cow dung, wet chicken manure, and edible fungi slag and uniformly stirring, fermenting at 25-30 degrees C, controlling water content at 55-62 wt.%; (3) fermenting ferment bacteria and functional bacteria, mixing all materials; (4) after the fermentation of the material is completed, uniformly stacking secondary fermentation to remove the heavy metal and other harmful substances; and (5) air-drying the mixed fertilizer or drying till the water content is 15-30 wt.%, sieving to obtain the powder product, and packing.