NOVELTY - Poly-element composite microbial fertilizer preparation involves selecting and mixing powder of fungal residue, rice husk, chitosan, turf, sweat husk, bagasse, saw dust or plant ash, where the prepared fertilizer comprises organozinc compound. The powder is filtered by 0.1-2cm screen to prepare sample A. Chroococcus, Eunotia lunaris, Chlamydomonas sajao, Anabaena azotica and Chlorella vulgaris are fermented. The fermented algae liquid is absorbed by the sample A with 3-12 times of weight.    USE - Method for preparing poly-element composite microbial fertilizer (claimed) used for preventing physiological disease of plants caused by zinc deficiency.    ADVANTAGE - The method enables to prepare the poly-element composite microbial fertilizer that increases supply of effective nutrient to soil, improves physical and chemical properties of soil, promotes growth of plants and improves production and quality of crops.    DETAILED DESCRIPTION - Poly-element composite microbial fertilizer preparation involves selecting and mixing powder of fungal residue, rice husk, chitosan, turf, sweat husk, bagasse, saw dust or plant ash, where the prepared fertilizer comprises organozinc compound. The powder is filtered by 0.1-2cm screen to prepare sample A. Chroococcus, Eunotia lunaris, Chlamydomonas sajao, Anabaena azotica and Chlorella vulgaris are fermented. The fermented algae liquid is absorbed by the sample A with 3-12 times of weight. The absorbed single algae agent is mixed in a mass ratio of 5-55:0-30:0-35:0-35:10-50 to prepare another sample B. Powder of calcium carbonate, montmorillonite, turf, lignitous coal, zeolite, vermiculite, pulverized fuel ash, bentonite and kieselguhr are mixed and then filtered by 0.1-2cm screen to prepare sample C. Bacillus megaterium, Bacillus subtilis, Rhodopseudomonas palustris, Streptomyces jingyangensis and Bacillus mucilaginosus are fermented and the fermented algae liquid is absorbed by the sample C with 2-10 times of the weight. Absorbed single algae agent is mixed uniformly in a weight ratio of 10-50:0-35:0-30:0-25:10-55 to prepare sample D. Tryptophan, lysine, glycine, threonine and methionine are provided in a reactor with 5-30wt.%, and dissolved in water (10-30wt.%). Hydrogen peroxide and alcohol (0.5-5.5 mass%) are added into the reactor and then the mixture is reacted for 0.5-3.5 hours at 20-65 degrees C. Gallic acid (0-10wt.%) is also added into the reactor. Zinc sulfate (30-70wt.%) is added into the reactor and complex reaction is performed for 0.5-6.5 hours at 65-105 degrees C. The mixture is cooled at room temperature and 2-5kg/cm2 pressure. The mixture is stored for 12-30 hours to prepare sample E. Sample B (30-55), sample D (25-55), sample E (5-15) and livestock and poultry manure (0.8) are used to prepare final product.