To provide a drying system for a moisture-containing treated object for drying the moisture-containing treated object in an energy saving manner, and eliminating odor of a dry exhaust gas of the moisture-containing treated object also in an energy saving manner.

This drying system comprises an engine-driven air conditioner 1 performing air conditioning by rotating a refrigerant compressor by driving force of an engine 10, a dryer 3 for drying the moisture-containing treated object by utilizing exhaust heat of the engine 10, and a deodorization device 4 for deodorizing the dried exhaust gas from the dryer 3 by a deodorization catalyst heated by the heat of exhaust gas of the engine 10.