The invention discloses a locust capturing method. A locust capturing system is composed of a smell device, an air-draft inflation wall, a lamplight ring, an inflation wall, wind power pipelines, a fan, a motor, a locust collecting bag and an air guide hose. Locusts are induced by using an infrared light source and smell, and gathered by using the air-draft inflation wall, the smell device is positioned and floats in front of the air-draft inflation wall, the smell is extracted from locust organisms, the infrared light source is mounted in an inflation frame, LD infrared light is distributed on the frame at intervals, and the light source forms a stereoscopic irradiation light body just in front around the frame. The capturing system can be manufactured as a machine in the manner of industrialization, standardization, serialization and universalization, and is suitable for inducting and capturing locusts on various occasions, the whole locust treatment process is free from pollutant or safety loopholes, the stored captured insects can be used as raw materials of feed and fertilizer, and the cultural environment and the animal and plant growth environment are improved.