For an industrial wood pellet plant, a pellet cooler is never a dispensable thing. When pellets come out of the pellet mill, they are always hot and wet. Then a pellet cooler is needed. Biomass pellet cooler is a type of counterflow cooling machine with highly automated control system. Adopting the counterflow cooling principle, it can cool down the temperature of the pellets to 3 ～ 5℃ above room temperature and take away most of the moisture on the surface of the pellets at the same time. Besides cooling wood pellets, biomass pellet cooler can also be used for cooling feed pellets in feed pellet processing lines.