NOVELTY - Producing growth promoting bio-organic fertilizer by using algae mud as an additive, comprises culturing Bacillus amyloliquefaciens (SQR9), carrying out liquid fermentation production to produce spore, composting cow manure and algae mud, uniformly mixing, inoculating growth promoting bacteria for solid fermentation, turning for once every day, fermenting such that the bacterial amount reaches to more than 2x 107 colony forming units (CFU)/g dry weight of fertilizer, evaporating the moisture in the microbial organic fertilizer to less than 30% at not greater than 60 degrees C, and packaging.    USE - The method is useful for producing growth promoting bio-organic fertilizer by using algae mud as an additive (claimed).    ADVANTAGE - The method is economical. The fertilizer is rich in beneficial amino acids, has high growth promoting efficiency, and can be applied to grain crops and vegetables.    DETAILED DESCRIPTION - Producing growth promoting bio-organic fertilizer by using algae mud as an additive, comprises (a) inoculating Bacillus amyloliquefaciens (SQR9) having a preservation number CGMCC NO: 5808 into potato dextrose agar (PDA) culture medium, carrying out liquid fermentation production at neutral pH and at 30-35 degrees C under a stirring speed of 180-300 revolutions/minute, where the fermentation produces spore, and the amount of bacteria or spore in the fermentation broth is more than 1x 109 cells/ml, and the preparation of 1 l PDA culture medium comprises taking 200 g potato, peeling, cutting into piece and boiling in water for 30 minutes, filtering the liquid, adding 20 g sucrose, making up the volume to 1 l, and adjusting the pH to 7-7.6, and sterilizing at 121 degrees C for 20 minutes, (b) composting cow manure and algae mud in a dry weight ratio of 9.5:0.5 and uniformly mixing, (b) inoculating the growth promoting bacteria (50 l per ton of solid organic compounds) into composted cow manure and algae mud mixture for solid fermentation, turning for once every day, where the solid fermentation temperature is not greater than 50 degrees C, fermenting for 6-7 days, such that the bacterial amount reaches to more than 2x 107 colony forming units (CFU)/g dry weight of fertilizer, evaporating the moisture in the microbial organic fertilizer to less than 30% at not greater than 60 degrees C, and packaging the growth-promoting organic fertilizer. The composted cow dung has a germination index of more than 98%, organic substances of greater than or equal to 45%, organic nitrogen of 2-3% and the water content of 25-30%.