The FTH-B03 is a portable backpack style detection and countermeasure device that integrates detection and countermeasure functions. It adopts a modular backpack design that balances mobility and practicality. The device is equipped with an intelligent detection system, a professional control handle, and supports dual modes of fully automatic scanning recognition and manual precise intervention. It has vibration alarm and sound alarm prompt functions. The system provides flexible configuration of multiple frequency bands, which can be customized according to needs, and supports independent deployment or networked collaborative working modes. The integrated structure integrates efficient energy systems, taking into account both indoor and outdoor power supply methods. The body layout conforms to ergonomics, and the lightweight design facilitates rapid deployment. The entire system achieves full process control of detection, analysis, and disposal through an intelligent human-computer interaction interface, and is suitable for low altitude security tasks in various complex environments.