NOVELTY - Method for preparing complex microbial liquid fertilizer involves (a) preserving e.g. yeast, expanding culture and adsorbing, (b) preprocessing e.g. egg, (c) crushing e.g. trace elements, (d) boiling groundwater, adding preprocessed e.g. molasses and mixed carrier of B.subtilis and fermented yeast, fermenting, adding preprocessed e.g. egg, fermenting, adding mixed carrier e.g. and phosphorus and potassium resolving bacteria and adding e.g. trace elements, fermenting, adding microbial stabilizer, and filtering, (e) refrigerating and (f) packing product.    USE - The method is useful for preparing complex microbial liquid fertilizer (claimed) for crops.    ADVANTAGE - The prepared complex microbial liquid fertilizer is rich in nutrients, animal and plant protein, fiber, essential vitamins, and trace element, and safe contains 2000000000/ml high content complex bacteria, where B.subtilis content is more than 1000000000/ml, Actinomycetes is more than 500000000/ml, Saccharomycetes, lactic acid bacteria and phosphorus and potassium resolving bacteria are more than 500000000/ml, and no chemical hormones or growth regulators, and has mild effect.    DETAILED DESCRIPTION - Method for preparing complex microbial liquid fertilizer involves (a) preserving Bacillus subtilis, Actinomycetes, yeast, lactic acid bacteria, and phosphorus and potassium resolving bacteria, expanding the bacterial culture, adsorbing on biological carrier, and uniformly mixing, (b) stabilizing and preprocessing egg, soybean powder, rice bran, milk, molasses, and high active protein, (c) crushing trace elements, seaweed essence, and fulvic acid, and uniformly mixing, (d) boiling groundwater at 55 plus minus 0.5 degrees C, adding preprocessed molasses, and rice bran and mixed carrier of B.subtilis and fermented yeast, uniformly stirring and fermenting for 24 hours, then adding preprocessed egg, soybean powder, high active protein, and milk, and continuously stirring and fermenting at 10-30 degrees C for 120 hours, then adding mixed carrier of lactic acid bacteria and phosphorus and potassium resolving bacteria, and adding crushed trace elements, seaweed essence, and fulvic acid, uniformly stirring and fermenting for 24 hours, adding microbial stabilizer, uniformly stirring, allowing to stand for 24 hours, and filtering to obtain supernatant, (e) refrigerating the supernatant obtained in step (d) at -2 to 10 degrees C, and (f) weighing the refrigerated liquid and packing the product.