The invention discloses an air supply system for a zinc-air power battery pack. The air supply system comprises an air blower, an air inlet pipeline, the zinc-air power battery pack, an air outlet pipeline, a controller, a heater, a first temperature sensor, a first electromagnetic valve, a second temperature sensor and a second electromagnetic valve, wherein the air blower, the air inlet pipeline, the zinc-air power battery pack and the air outlet pipeline are sequentially connected; the heater, the first temperature sensor, the first electromagnetic valve, the second temperature sensor and the second electromagnetic valve are connected with the controller; the heater is arranged on the end part, close to the air blower, of the air inlet pipeline; the first electromagnetic valve is arranged on the end part, close to the zinc-air power battery pack, of the air inlet pipeline; the first temperature sensor is arranged on the air inlet pipeline between the air blower and the first electromagnetic valve; the second electromagnetic valve is arranged on the end part, close to the zinc-air power battery pack, of the air outlet pipeline; and the second temperature sensor is arranged on the air outlet pipeline between the zinc-air power battery pack and the second electromagnetic valve. The system can block air to prevent self-discharging in the non-working state of a zinc-air power battery, can be started at low temperature to make the performance of the battery normally developed, and also can be self-powered on to start the controller to control timely and accurate air supply.