NOVELTY - Multi-element microbial fertilizer, comprises 47-50 parts mass fish meal, 45-60 parts mass sweet potato powder, 20-40 parts mass sludge, 30-48 parts mass manure, 4-6 parts mass microorganism, 20-40 parts mass oyster, 40-60 parts mass shell powder, 3-6 parts mass molasses, 4-5 parts mass wheat bran, 20-35 parts mass nitrogen phosphorus- potassium mixture, 5-10 parts mass trace element comprising calcium, magnesium, sulfur, and iron, and 3-5 parts mass bentonite.    USE - The multi-element microbial fertilizer is useful for preventing hardening of soil.    ADVANTAGE - The multi-element microbial fertilizer is rich in elements hence suitable for all kinds of plant growth.    DETAILED DESCRIPTION - Multi-element microbial fertilizer, comprises 47-50 parts mass fish meal, 45-60 parts mass sweet potato powder, 20-40 parts mass sludge, 30-48 parts mass manure, 4-6 parts microorganism, 20-40 parts mass oyster, 40-60 parts mass shell powder, 3-6 parts mass molasses, 4-5 parts mass wheat bran, 20-35 parts mass nitrogen phosphorus- potassium mixture, 5-10 parts mass trace element comprising calcium, magnesium, sulfur, and iron, and 3-5 parts mass bentonite. The microorganism is rhizobia, Azotobacter chroococcum, Bacillus megatherium and B.mucilaginosus. An INDEPENDENT CLAIM is included for preparation of the multi-element fertilizer, which involves (a) mixing fish meal, sweet potato powder, sludge, manure, and shell powder into stirrer, controlling moisture content of mixture to 60-70%, heating the mixture at 30-35 degrees C and pH 5-6, and stirring the mixture for 0.5 hours, (b) adding the microorganism into the mixture, and fermenting the mixture, at 50-60 degrees C for 3-4 days, (c) stirring fermentation product, adding molasses, wheat bran, nitrogen-phosphorus-potassium mixture, trace element and bentonite into fermentation product, stirring the mixture uniformly, controlling moisture content of the mixture to 20-32%, and placing the mixture at 25-28 degrees C for 1-2 hours, (d) granulating the mixture by using steam granulator, (e) drying the granulated material, and (f) packing product.