NOVELTY - Inorganic-organic microbial fertilizer comprises (in wt.%): three inorganic elements (60-70), humic acid (10-20), coal ash (5-10), composite powder (5-10) and other elements. The composite powder is prepared by fermenting Rhodoplanes elegans (ACCC 10649) and Pichia fermentans lodder (ACCC 20319T).    USE - Inorganic-organic microbial fertilizer.    ADVANTAGE - The inorganic-organic microbial fertilizer increases the stress resistance and disease resistance properties of crops and thus the fertilizer improves the quality of the crops.    DETAILED DESCRIPTION - Inorganic-organic microbial fertilizer comprises (in wt.%): three inorganic elements (60-70), humic acid (10-20), coal ash (5-10), composite powder (5-10) and other elements. The composite powder is prepared by fermenting Rhodoplanes elegans (ACCC 10649), Pichia fermentans lodder (ACCC 20319T), Lactococcus lactic (ACCC 11092), Bifidobacterium sp. (ACCC 11054), Bacillus subtills spizienii (ACCC 10242T), Bacillus licheniformis (ACCC 10146), Brevibacillus laterosporus (ACCC 11079), Bacillus megaterium (ACCC 10010), Bacillus mucilaginosus (ACCC 10013), Azotobacter chroococum (ACCC 10001) and Actinobacillus capsulatus (ACCC 11051). An INDEPENDENT CLAIM is also included for a method for preparing inorganic-organic microbial fertilizer, which involves:    (A) preparing microorganism composite bacteria powder by incubating Rhodoplanes elegans under aseptic condition in a liquid culture medium, where liquid culture medium consists of 1.0 L of distilled water, 3.0 g of yeast powder, 3.0 g of peptone, 0.5 g of magnesium sulfate heptahydrate, 0.3 g of anhydrous calcium chloride in an incubator for 6-7 days at 28-30 degrees C;    (B) preparing a bacteria solution containing Pichia fermentans under aseptic condition in a liquid culture medium, which contains 1.0 L of distilled water, 1.0 g of magnesium sulfate heptahydrate, 2.0 g of monopotassium phosphate, 30 g of urea, 1.0 g of corn steep liquor, 0.02 g of manganese sulfate and 0.2 g of ferric sulfate;    (C) preparing a bacteria solution containing Lactococcus lactic under aseptic condition in a liquid culture medium, which contains 1.0 L of distilled water, 200.0 ml of tomato juice, 0.5 g of soluble starch, 15.0 g of peptone, 5.0 g of sodium chloride, 6.0 g of Saccharomycetes, 1.0 g of Tween 80 and 20 g of glucose;    (D) preparing a bacteria solution containing Bifidobacterium sp. under aseptic condition in a liquid culture medium, which contains 1.0 L of distilled water, 200.0 ml of tomato juice, 0.5 g of soluble starch, 15.0 g of peptone, 5.0 g of sodium chloride, 6.0 g of Saccharomycetes, 1.0 g of Tween 80 and 20 g of glucose;    (E) preparing a bacteria solution containing Bacillus subtills subsp., Bacillus licheniformis, Brevibacillus laterosporus, Bacillus megaterium, Azotobacter chroococum and Actinobacillus capsulatus Arseculeratne in a culture medium consists of 5wt.% of starch, 7.5wt.% of soybean cake powder, 0.2wt.% of dipotassium phosphate, 0.1wt.% of ammonium sulfate, 0.05wt.% of magnesium sulfate, 0.005wt.% of ferric trichloride, 0.05wt.% of calcium carbonate, 0.01wt.% of yeast powder and 0.005wt.% of boric acid under aerobic condition for 48 hours; and    (F) stirring the obtained microbial solutions at 150-200 revolutions per minute in a tank to obtain the desired product.