NOVELTY - A zinc negative electrode material preparing method involves utilizing liquid phase reaction, preparing raw material solution A, taking phosphoric acid, pyrophosphate, tripolyphosphate, phosphate, hydrogen phosphate, dihydrogen phosphate and pyrophosphate, dissolving with solvent, preparing raw material solution B, selecting zinc salt and complexing agent, dissolving with solvent to obtain raw material solution B. The obtained solution is added with raw material solution A and heated followed by removing mother liquid, washing and drying to obtain finished product.    USE - Method for preparing zinc negative electrode material for power tools, electric vehicles and power grids.    ADVANTAGE - The method enables preparing the zinc negative electrode material with high activity in a simple, cost effective and eco friendly manner.    DETAILED DESCRIPTION - A zinc negative electrode material preparing method involves utilizing liquid phase reaction, preparing raw material solution A, taking phosphoric acid, pyrophosphate, tripolyphosphate, phosphate, hydrogen phosphate, dihydrogen phosphate, pyrophosphate, monohydrogen pyrophosphate, dihydrogen pyrophosphate, tricalcium phosphate, potassium pyrophosphate salts, tripolyphosphate monohydrogenphosphate, dihydrogen tripolyphosphate, potassium tripolyphosphate and trimerization tetrahydro-phosphate salts, dissolving with solvent, preparing raw material solution B, selecting 0.01-2 mol/l zinc salt and 0-2 mol/l complexing agent, dissolving with solvent to obtain raw material solution B. The obtained solution is added with raw material solution A and heated at 0-100 degrees C followed by removing mother liquid, washing and drying to obtain finished product, where the salt is lithium, sodium, potassium and/or ammonium, the zinc salt is zinc nitrate, zinc sulfate, zinc halide, oxyhalide, zinc acetate, zinc, zinc fluroborate, zinc fluorosulfonic acid and/or zinc methanesulfonic acid and the complexing agent is acetic acid, acetate, boric acid, borate, thioglycolic acid, mercapto acetate, citric acid, citrate, EDTA, ethylene diamine tetraacetate, thiourea, ethylenediamine, triethanolamine and/or ammonia.