The handheld backscatter imaging device is designed as a handheld integrated device, with a battery installed and powered on to use. The scanning process does not require background boards, PDAs, or other devices, and can scan areas that are difficult to detect with conventional equipment. It is particularly suitable for detecting walls, vehicles, ships, airplanes, wrapping, etc; Strong penetration ability, able to detect hidden prohibited items such as drugs, explosives, smuggled goods, etc. through surfaces such as steel, aluminum, and concrete. The images are clear and intuitive, which can broaden the staff's field of vision and provide real-time imaging, effectively discovering hidden prohibited items.