The invention relates to the airplane safety field, and especially relates to a method of setting an elastic anti-bird strike net in an aircraft engine air inlet; the method comprises the following steps: setting a netted barrier layer vertical to an aircraft engine air inlet air-flow running direction in the aircraft engine air inlet, wherein each grid of the netted barrier layer is smaller than a normal bird size, the outer rim of the netted barrier layer is matched with that of the aircraft engine air inlet, and the barrier layer and the air inlet are mechanically connected through an elastic telescopic device so as to make telescopic motions parallel to the airflow running direction; the netted barrier layer is provided with an anti-icing heating device; when a bird hits the anti-bird strike net, an elastic telescopic unit of the elastic telescopic device can make telescopic motions approximately parallel to the bird hitting direction, thus absorbing the bird hitting energy; the method can use the anti-bird strike net to absorb bird kinetic energy so as to enhance anti-bird strike intensity; in addition, the anti-bird strike net is provided with the anti-icing heating device, so the anti-bird strike net cannot be frozen, and thus blocking the aircraft engine air inlet.