A sanitary washing device includes: a water discharge nozzle configured to squirt water from a water discharge port; a first channel configured to guide water supplied from a water supply source to the water discharge nozzle; a first channel opening/closing valve provided in the first channel and configured to control passage of water through the first channel; a heat exchange unit provided in the first channel between the first channel opening/closing valve and the water discharge nozzle and configured to heat water passed therethrough; and a draining device configured to drain water in the heat exchange unit toward the water supply source.
