Abstract: An apparatus for drying organic waste dries and pulverizes organic waste, such as sewage sludge generated at a sewage pipe and a sewage treatment plant, various hydrous sludge waste, and food waste. The apparatus includes a drying drum rotatably provided on a base, a supply unit and a discharge pipe respectively provided at sealing caps for sealing front and rear sides of the drying drum, first and second pulverizing rotational blades driven by rotation axes provided at the front portion in the drying drum in a lengthwise direction thereof, an auxiliary pulverizing rotation blade driven by a rotation axis provided at the rear portion in the drying drum in a lengthwise direction thereof, a first opening portion and a first sealing member for discharging fine dried powder generated in a drying process, a second opening portion and a second sealing member for discharging completely dried organic waste, and a drying burner for blowing hot wind into the drying drum.