The invention discloses a mixed aqueous solution battery preparation method based on a sodium-embedded positive pole material. Sodium salt and other metal salt serve as raw materials to prepare the sodium-embedded compound positive pole material; the positive pole material, a conductive agent and an adhesive are mixed according to the proportion, then smeared to a current collector and dried at the temperature of 60-120 DEG C, and a positive pole is prepared; mixed salt containing sodium and zinc serves as electrolyte to prepare an electrolytic solution; the positive pole, a negative pole, a membrane and the electrolytic solution are assembled into a mixed aqueous solution battery, and the open-circuit voltage of the battery is 1-2 V, wherein zinc serves as the negative pole and the membrane is a glass fiber membrane. The battery has the advantages that safety and rate capability are high, raw material sources are wide, the price is low and the negative pole material is high in capacity, and a choice is provided for power batteries or large energy-storage batteries.