The invention discloses a preparation method for a zinc oxide-coated Prussian blue electrode material, and belongs to the technical field of electrode material synthesis. The preparation comprise the steps of uniformly mixing a zinc salt, carbonate and a Prussian blue material, performing calcination under protection of an inert gas at 100-400 DEG C for 1 to 24 hours, and performing cleaning and drying after reducing to a room temperature to obtain the zinc oxide-coated Prussian blue electrode material. The preparation method is simple in process and low in cost and is safe and reliable; and by the prepared zinc oxide-coated Prussian blue electrode material, side reaction of an electrolyte and the electrode material is effectively reduced, so that the electrode material has relatively high stability during the charge-discharge process, the cycle stability and the rate performance of a battery can be obviously improved, and industrial production is facilitated.