Abstract: Ferrate (VI) is a kind of strong oxidizing agent with environment-friendly feature.It has important potential application in fields,such as water treatment,organic synthesis and,super-iron (Ⅵ) battery.Research progress and features of main ferrate(VI) preparation methods including melting method,hypochlorite oxidation method,and electrochemical oxidation method in recent two decades were summarized.Electrochemical oxidation method also included&nbsp; liquid ferrate electrosynthesis method and direct solid-state ferrate electrosynthesis method.It was pointed that direct electrosynthesis method of solid potassium ferrate (K2FeO<SUB>4</SUB>) was the most possible preparation method to be applied in industrial production for its merits of simple operation,small consumption of raw material,low cost,available cycle-production,and environment-friendly process,and its development direction in future was also marked out.