To improve response of temperature rise or cooling of a piston, in a piston temperature control device appropriately perform warm-up and cooling of the piston used in an internal combustion engine.

The piston temperature control device comprises: a cooling channel of double structure formed to a piston head part 1a and constituted of an inside first oil passage 3 and an outside second oil passage 4; a warm-up oil supply means 20 for supplying warm-up oil during cold engine into at least one of the first and second oil passages 3, 4; and a cooling oil supply means 30 structured separately from the warm-up oil supply means 20 and supplying cooling oil to at least the other of the first and second oil passages 3, 4 when the temperature of the piston is high.