The invention discloses a purification method of
cefoperazone sodium, which comprises the steps of S1, adding a
cefoperazone sodium and
sulbactam sodium product into
purified water, stirring until thesolution is clear, controlling the temperature, adding
acetone into the reaction tank, and starting stirring until the
cefoperazone sodium and
sulbactam sodium are completely dissolved to obtain a dissolved solution; S2, adding
activated carbon into the dissolved solution for decoloration, and filtering to obtain a destaining solution for later use; S3, adding
acetone, isopropanol and
ethanol into a crystallizer to obtain a
mixed solution, and controlling the temperature of the crystallizer; S4, adding the destaining solution obtained in the step S2 into the crystallizer in a rapid stirring state, then dropwise adding a
sodium bicarbonate solution to adjust the pH value of the feed liquid, and growing crystals; S5, after
crystal growing is finished, cooling for
crystal growing, filtering,and washing with an
acetone-water
mixed solution; and S6, conducting
vacuum drying and discharging. The prepared
cefoperazone sodium has the advantages of being stable in quality, low in
impurity content and high in product content.