Large size ordered structure AgO electrode materials were prepared by an electrochemical method. The crystal structure, phase composition, microstructure, formation mechanism and discharge properties of samples were investigated. The results of crystal structure and phase composition show that AgO material synthesized has a strong (002) orientation and a relatively high purity phase. The results of microstructure indicate that AgO material has an ordered columnar arrangement structure with a straight-through hollow structure and a column diameter of 1-3 μm, which is conducive to the electrolyte diffusion. Based on the results of thermal analysis, the purity of AgO material is higher than 98.5%. Under the action of electric field force and gas evolution, AgO material forms an ordered columnar structure through self-assembly, which is conducive to the diffusion of electrolyte solution in the electrode and greatly improves the discharge performance of the large size AgO electrode. The average voltage of AgO electrode is 1.67 V and the electrochemical utilization ratio is 75.6% when the discharge current density is 770 mA/cm² and the cut-off voltage is 1.5 V, enhancing the high-rate discharge performance and utilization. Realizing a small-batch preparation of large-size AgO electrode material can meet the requirement of industrial production and application.