A double-tub laundry device includes a first tub assembly, a second tub assembly, a first valve assembly, a second valve assembly, a first fan, and a second fan. The first valve assembly includes a first blocking mechanism and a first valve casing having a first air inlet chamber and a first air outlet chamber; the first blocking mechanism is configured to block both a first air inlet pipe and a first air outlet pipe from the outside; the second valve assembly includes a second blocking mechanism and a second valve casing having a second air inlet chamber and a second air outlet chamber; and the second blocking mechanism is configured to block both a second air inlet pipe and a second air outlet pipe from the outside. Embodiments achieve partitioned washing of the double-tub drum washing machine and independent air drying of each tub assembly.