The invention relates to a household clothes drying device which is enclosed by a back plate from the rear part and comprises a dried air loop, a condensing device and an air discharging structure, wherein dried air circulates in the dried air loop so as to remove water from washing clothes; the condensing device condenses water carried in the dried air by cold air; the air discharging structure is arranged on the back plate and used for guiding the cold air discharged from the condensing device into the exterior of the device; and the air discharging structure comprises a plurality of approximately vertical openings. Therefore, the cold air can be discharged from the openings of the air discharging structure more smoothly, and the distribution of the cold air is evener, and the condensing effect of the condensing device is remarkably improved.