The present invention relates to an apparatus for processing sewage sludge into fuel, which comprises: a sludge transforming part transforming sludge into a plate-form; a sludge transporting part transporting the plate sludge; a sludge heating part heating the transported plate sludge; a hydroxyl radical-supplying part supplying hydroxyl radicals to the heated plate sludge; and a sludge drying part drying the plate sludge supplied with hydroxyl radicals.
