PROBLEM TO BE SOLVED: To efficiently manufacture dry foods and the like while keeping much flavor and active ingredients of a row material.SOLUTION: A microwave reduced-pressure oscillation dryer 1 includes: an oscillation drum 7 including a window portion 6 used also as an inlet 3 and an outlet 5 a drying chamber body 11 including an opening portion 9 for taking in and out the oscillation drum 7 an opening/closing door 13 for closing the opening portion 9 to define a shielded space in the drying chamber body 11 a microwave irradiation device 15 irradiating microwave toward a dried object A accommodated in the drying chamber body 11 to dry the same a pressure reducing device 17 for bringing the inside of the drying chamber body 11 in a pressure-reduced atmosphere oscillating driving means 19 for oscillating the oscillation drum 7 and a control device 21 controlling microwave output of the microwave irradiation device 15 on the basis of a temperature in the drying chamber body 11.
