NOVELTY - Effective microorganism (EM) microbial inoculum fermented complex fertilizer comprises 10-12 ammonium chloride, 20-23 urea, 1-2 manganese sulfate, 8-10 potassium sulfate, 2-3 ferroferric oxide, 1-2 borax, 2-3 zinc sulfate, 1-2 magnesium chloride, 20-23 grass peat, 50-55 castor stalk, 10-12 tobacco stalk, 2-3 radix sophorae flavescentis, 40-45 wheat bran, 10-12 corn flour, 20-23 rice bran, 3-4 EM microbial inocula and 4-6 coating agent containing 30-35 hydroxyethyl methacrylate, 10-15 trimethylolpropane triacrylate, 2-3 silane coupling agent KH-570, 1-2 nano-carbon and 2-3 jade powder.    USE - The fertilizer is useful for red grapes (claimed).    ADVANTAGE - The fertilizer contains low-cost organic raw materials; provides balanced nutrition; has high utilization rate; long lasting fertilization effect; protects the soil; improves the yield and quality of red grapes; and reduces the incidence of pests and diseases.    DETAILED DESCRIPTION - Effective microorganism (EM) microbial inoculum fermented complex fertilizer comprises 10-12 ammonium chloride, 20-23 urea, 1-2 manganese sulfate, 8-10 potassium sulfate, 2-3 ferroferric oxide, 1-2 borax, 2-3 zinc sulfate, 1-2 magnesium chloride, 20-23 grass peat, 50-55 castor stalk, 10-12 tobacco stalk, 2-3 radix sophorae flavescentis, 40-45 wheat bran, 10-12 corn flour, 20-23 rice bran, 3-4 EM microbial inocula and 4-6 coating agent containing 30-35 hydroxyethyl methacrylate, 10-15 trimethylolpropane triacrylate, 2-3 silane coupling agent KH-570, 1-2 nano-carbon, and 2-3 jade powder. The preparation of the coating agent comprises mixing the coating agent raw materials, grinding and dispersing uniformly. An INDEPENDENT CLAIM is also included for preparing the fertilizer, comprising (a) mixing castor stalk, tobacco stalk, radix sophorae flavescentis, water, grass peat, bran, corn flour and rice bran, adding EM microbial inoculum, completely stirring uniformly, carrying out stacking fermentation for 6-8 days, turning for once in every 2-3 days until the fermentation material is completely decomposed, (b) mixing the components except the coating agent, and mixing with mixed material of the step (a) and stirring uniformly, and (c) heating to 80-90 degrees C, adding coating agent, stirring uniformly, and granulating.