Abstract: The manual soot blowing for oil fired heater is low efficient and easy to cause environmental pollution. This paper introduces a soot blower developed on the basis of dust cleaning technology of gravity and filter bag. This soot blower can work continually and its two-chamber can blow soot in turns with pneumatic valves controlled by PLC. The filter bag is treated with anti-water/oil way. Several shapes of cleaning brush are designed for different requirements of soot blowing. With the new type of structure, the soot blower can work without dust emission and secondary pollution. It is automatically designed to integrate the soot filtering and cleaning. With powerful suction, the soot blowing efficiency is very high, and over 99% dust particles being more than 0.1 μm can be filtered.