NOVELTY - A zinc gel is prepared by mixing a zinc powder mixture and alkaline electrolyte at a mass ratio of 100: 30-50, where the alkaline electrolyte is a saturated zinc oxide potassium hydroxide solution containing additives, and the zinc powder mixture is obtained by mixing mercury-free zinc powder, gelling agent, a corrosion inhibitor, zinc oxide and rare earth oxide at a ratio of 100:1.5: 0.001-0.5: 1: 0.1-1, and additive is calcium oxide, sodium stannate, calcium chloride, citric acid, Tween-40 (RTM: Polyoxyethylene sorbitan monopalmitate), dodecyl benzene sulfonic acid sodium salt.    USE - Zinc gel for use in a zinc-air battery.    ADVANTAGE - The zinc gel gas reduces evolution volume and internal resistance, and swelling and electrolyte leakage and creepage of the battery, and improves electrical performance of the battery with prolonged service life and storage life.    DETAILED DESCRIPTION - A zinc gel is prepared by mixing a zinc powder mixture and alkaline electrolyte at a mass ratio of 100: 30-50, where the alkaline electrolyte is a saturated zinc oxide potassium hydroxide solution containing additives and the zinc powder mixture is obtained by mixing mercury-free zinc powder, gelling agent, a corrosion inhibitor, zinc oxide and rare earth oxide at a mass ratio of 100:1.5: 0.001-0.5: 1: 0.1-1, the additive is calcium oxide, sodium stannate, calcium chloride, citric acid, Tween-40 (RTM: Polyoxyethylene sorbitan monopalmitate), dodecyl benzene sulfonic acid sodium salt, and the corrosion inhibitor is indium oxide, indium oxide, bismuth oxide, lead oxide, cadmium oxide, and gallium oxide. An INDEPENDENT CLAIM is also included for a method for preparing zinc gel, which involves preparing an additive-containing saturated zinc oxide potassium hydroxide solution by mixing zinc powder mixture and alkaline electrolyte at a ratio of 100:1, gelling agent, a corrosion inhibitor, zinc oxide and rare earth oxide, uniformly mixing zinc powder to form mixture, adding the zinc powder mixture with the alkaline electrolyte by vacuum stirring for 10-20 minutes to obtain the zinc gel.