PURPOSE: A pellet fuel boiler system is provided to reduce energy consumption by efficiently heating recycling water using waste heat of high temperature from combustion gas. CONSTITUTION: A pellet fuel boiler system comprises a pellet combustion unit(110), a pellet fuel feeding unit(120), an ignitor(130), and a combustion air supplying and jetting pipe(140). A pellet combustion unit comprises a combustion chamber(111) and an exhaust port(112). Combustion gas generated when burning pellet fuel in a combustion chamber is discharged to outside through the exhaust port. The pellet fuel feeding unit consecutively supplies the pellet fuel to inside the combustion chamber. The ignitor is used for initial ignition of the pellet fuel. The combustion air supplying and jetting pipe receives air forcibly blown from an air blower(B) and completely burns the pellet fuel inside the combustion chamber by forcibly blowing the air through air jetting holes(141).
