The invention aims at providing a small supercharged boiler burner. The small supercharged boiler burner comprises an oil way, a spraying gun and an ignition system, wherein the oil way comprises an oil storage box, an oil pump, a first pipe, a second pipe and a third pipe, the oil storage box is communicated with the oil pump through the first pipe and the second pipe to form a circulation oil way, the first pipe is in the oil outlet direction, the second pipe is in the oil return direction, the second pipe is communicated with the third pipe, the spraying gun comprises a first spraying gun body, the third pipe is communicated with the first spraying gun body, the ignition system is installed on the first spraying gun body and comprises an ignition control switch and a first ignition electrode, and the first ignition electrode is installed at the position of a nozzle of the first spraying gun body. According to the small supercharged boiler burner, the requirements of a small supercharged boiler for the small hearth size, a narrow and long burning chamber and high volume thermal loads can be met, the oil quantity changes can be adjusted within a large scope, and the multiple working condition requirements can be met. Pressure atomization is adopted, liquid fog after atomization has the advantages of being narrow and long, and the atomization grain diameters are small under the condition that the inlet pressure is guaranteed.