A system for automatically acquiring insect pest situation monitoring information of crops comprises an insect capture unit, an insect treatment unit, a central control unit and an insect collection unit, wherein the insect capture unit comprises an insect capture support device and a trigger switch, the insect treatment unit comprises a material evening cylinder and an insect receiving plate, the central control unit comprises a fill light, a camera, a data memory, a data transmitter and a central controller, and the insect collection unit comprises an inset removing brush and an insect receiving box. The system has real-time performance and avoids the loss of information caused by insect mildew and picking insects too late. The system is fast, and a data transmission system can provide data statistics service effectively and quickly to an identification system terminal. The system is efficient and employs a fully automatic mode. The system can be deployed in large scale, more accurate data can be provided, and monitoring effects can be greatly improved. The system is standardized. Since information collection is completed automatically, sampling is more standard, and the identification and statistical results are highly consistent. Scientific and accurate detection is achieved.