The invention discloses an air electrode of a zinc-air battery based on graphene; the air electrode of the zinc-air battery based on graphene is molded by laminating a waterproof ventilating layer, a current collector and a catalyzing layer. Graphene is added in a conductive agent inside the waterproof ventilating layer and the catalyzing layer; the conductive agent further comprises one or more of active carbon, acetylene black, graphite, and carbon black. The weight percentage of graphene in the conductive agent is 0.1%-100%. By adding graphene as well as the conductive agent consisted of graphene, active carbon, acetylene black, graphinte and carbon black into the air electrode of the zinc-air battery, the electrical conductivity of the zinc-air battery is increased, the heat dissipation speed of the battery is increased, and the problem that the battery emits heat while the battery works under a large current is solved. Meanwhile, the introduction of graphene increases the electric conductivity of the electrode, thereby improving the rate capability of the battery.