The invention provides a preparation method for a nickel-zinc cell anode material based on porous carbon nano-capsule with in-situ cladding zinc oxide. The method comprises the following steps: mixing and stirring zinc oxide, absolute ethyl alcohol and deionized water under room temperature, and then adding resorcinol and formaldehyde and stirring, thereby fully polymerizing and cladding; centrifuging, filtering and drying the solid and then placing into a tube furnace; heating to 600-1200 DEG C under nitrogen atmosphere and carbonizing; introducing carbon dioxide gas for activating and forming pores for 1-5h; and lastly, cooling, thereby acquiring the nickel-zinc cell anode material for a porous carbon nano-capsule with in-situ cladding zinc oxide. The invention firstly provides an in-situ cladding method for preparing the nickel-zinc cell anode material for the porous carbon nano-capsule with in-situ cladding zinc oxide with excellent electric conductivity, high pore volume and large specific surface; zinc oxide is fixed in the capsule by carbon atoms, so that the zinc oxide is prevented from being dissolved; due to the pores in adjustable size on the carbon capsule wall, the small-size alkali anions can freely enter into and exit from the carbon capsule; and the nickel-zinc cell anode material has ultrahigh application value and wide application prospect.