The device is mainly composed of five parts, multi-layer filtration and purification device, self-starting control device, solar power supply device, exhaust promotion device, waste heat recovery and utilization device. The multi-layer filter device is composed of high-density iron gauze, PM2.5 filter, activated carbon fiber mesh, and photocatalyst grid plate. We have added a temperature sensor at the bottom of the device. When there is smoke, the device can automatically start and automatically filter the smoke. We add a solar power supply device at the top of the device to provide energy for the entire chimney flue gas treatment device, and basically realize the energy self-sufficiency of the device.