A drying apparatus, comprising: a conveyor which is configured to convey a printing medium having a recording surface and a non-recording surface opposite to the recording surface, an aqueous ink adhering to the recording surface, a preceding-stage dryer (7a, 7b) which is configured to dry the printing medium by injecting a gas toward the recording surface of the printing medium being conveyed by the conveyor; and a next-stage dryer (7c, 7d) which is configured to dry the printing medium by injecting the gas toward the recording surface of the printing medium being conveyed by the conveyor on a side downstream of the preceding-stage dryer (7a, 7b) in a moving direction of the printing medium conveyed by the conveyor, a housing, and an exhaust chamber, a wind velocity of the gas injected by the preceding-stage dryer (7a, 7b) being lower than a wind velocity of the gas injected by the next-stage dryer (7c, 7d), the preceding-stage dryer (7a, 7b) includes a plurality of first nozzles arrayed in the moving direction of the printing medium conveyed by the conveyor on the recording surface side of the printing medium and is configured to inject the gas toward the recording surface of the printing medium from the first nozzles, the next-stage dryer (7c, 7d) includes a plurality of second nozzles arrayed in the moving direction of the printing medium conveyed by the conveyor on the recording surface side of the printing medium and is configured to inject the gas toward the recording surface of the printing medium from the second nozzles, and a wind velocity of the gas injected by the first nozzle is lower than a wind velocity of the gas injected by the second nozzle, characterized in that: the next-stage dryer (7c, 7d) is arranged below the preceding-stage dryer (7a, 7b) in a vertical direction, the conveyor includes a preceding-stage conveying part configured to convey the printing medium facing the preceding-stage dryer (7a, 7b) and a next-stage conveying part configured to convey the printing medium facing the next-stage dryer (7c, 7d), the conveyor, the preceding-stage dryer (7a, 7b) and the next-stage dryer (7c, 7d) are accommodated in the housing, and the exhaust chamber is arranged between the printing medium conveyed by the preceding-stage conveying part and the printing medium conveyed by the next-stage conveying part and is configured to exhaust air sucked from the inside of the housing. a conveyor which is configured to convey a printing medium having a recording surface and a non-recording surface opposite to the recording surface, an aqueous ink adhering to the recording surface, a preceding-stage dryer (7a, 7b) which is configured to dry the printing medium by injecting a gas toward the recording surface of the printing medium being conveyed by the conveyor; and a next-stage dryer (7c, 7d) which is configured to dry the printing medium by injecting the gas toward the recording surface of the printing medium being conveyed by the conveyor on a side downstream of the preceding-stage dryer (7a, 7b) in a moving direction of the printing medium conveyed by the conveyor, a housing, and an exhaust chamber, a wind velocity of the gas injected by the preceding-stage dryer (7a, 7b) being lower than a wind velocity of the gas injected by the next-stage dryer (7c, 7d), the preceding-stage dryer (7a, 7b) includes a plurality of first nozzles arrayed in the moving direction of the printing medium conveyed by the conveyor on the recording surface side of the printing medium and is configured to inject the gas toward the recording surface of the printing medium from the first nozzles, the next-stage dryer (7c, 7d) includes a plurality of second nozzles arrayed in the moving direction of the printing medium conveyed by the conveyor on the recording surface side of the printing medium and is configured to inject the gas toward the recording surface of the printing medium from the second nozzles, and a wind velocity of the gas injected by the first nozzle is lower than a wind velocity of the gas injected by the second nozzle, characterized in that: the next-stage dryer (7c, 7d) is arranged below the preceding-stage dryer (7a, 7b) in a vertical direction, the conveyor includes a preceding-stage conveying part configured to convey the printing medium facing the preceding-stage dryer (7a, 7b) and a next-stage conveying part configured to convey the printing medium facing the next-stage dryer (7c, 7d), the conveyor, the preceding-stage dryer (7a, 7b) and the next-stage dryer (7c, 7d) are accommodated in the housing, and the exhaust chamber is arranged between the printing medium conveyed by the preceding-stage conveying part and the printing medium conveyed by the next-stage conveying part and is configured to exhaust air sucked from the inside of the housing. the next-stage dryer (7c, 7d) is arranged below the preceding-stage dryer (7a, 7b) in a vertical direction, the conveyor includes a preceding-stage conveying part configured to convey the printing medium facing the preceding-stage dryer (7a, 7b) and a next-stage conveying part configured to convey the printing medium facing the next-stage dryer (7c, 7d), the conveyor, the preceding-stage dryer (7a, 7b) and the next-stage dryer (7c, 7d) are accommodated in the housing, and the exhaust chamber is arranged between the printing medium conveyed by the preceding-stage conveying part and the printing medium conveyed by the next-stage conveying part and is configured to exhaust air sucked from the inside of the housing.