A laundry treating machine including a laundry treating device (100) and a pedestal laundry treating device (200) is disclosed. The laundry treating machine is configured to achieve simultaneous or selective supply of water and simultaneous or selective draining of wash water for the laundry treating device (100) and pedestal laundry treating device (200). The pedestal laundry treating device (200) supports the laundry treating device (100) beneath and outside the laundry treating device. The pedestal laundry treating device (200) has a volume and a height smaller than those of the laundry treating device (100), and has a laundry treating function. The laundry treating machine (100) further includes a water supplier (350) for simultaneously or selectively supplying water to the laundry treating device (100) and pedestal laundry treating device (200), and a water drainer (460) for joining wash water discharged from the laundry treating device (100) and wash water discharged from the pedestal laundry treating device (200) into a draining pipe (430), and draining the joined wash water.