A vehicular heat exchange device comprising: a first medium flow circuit through which a heat exchange medium configured to exchange heat with an internal combustion engine flows; a second medium flow circuit through which the heat exchange medium, configured to exchange heat with an electric power storage unit that can be charged and discharged, flows; a first valve portion (71, 72, 73, 74) configured to switch between a communication state and a non-communication state between the first medium flow circuit and the second medium flow circuit; a third medium flow circuit through which the heat exchange medium, configured to exchange heat with a drive motor driven by electric power discharged from the electric power storage unit, flows; and a second valve portion (71, 72, 75) configured to switch between a communication state and a non-communication state between the first medium flow circuit and the third medium flow circuit, wherein the vehicular heat exchange device is configured such that the first valve portion (71, 72, 73, 74) causes the first medium flow circuit and the second medium flow circuit to be in the communication state to raise a temperature of the internal combustion engine before driving of the internal combustion engine using heat of the electric power storage unit, characterized in that the vehicular heat exchange device is configured such that the first valve portion (71, 72, 73, 74) causes the first medium flow circuit and the second medium flow circuit to be in the non-communication state and the second valve portion (71, 72, 75) causes the first medium flow circuit and the third medium flow circuit to be in the communication state to raise the temperature of the internal combustion engine before driving of the internal combustion engine by heat of the drive motor switched from the heat of the electric power storage unit in a case where a temperature of the drive motor becomes at least a third temperature threshold value. a first medium flow circuit through which a heat exchange medium configured to exchange heat with an internal combustion engine flows; a second medium flow circuit through which the heat exchange medium, configured to exchange heat with an electric power storage unit that can be charged and discharged, flows; a first valve portion (71, 72, 73, 74) configured to switch between a communication state and a non-communication state between the first medium flow circuit and the second medium flow circuit; a third medium flow circuit through which the heat exchange medium, configured to exchange heat with a drive motor driven by electric power discharged from the electric power storage unit, flows; and a second valve portion (71, 72, 75) configured to switch between a communication state and a non-communication state between the first medium flow circuit and the third medium flow circuit, wherein the vehicular heat exchange device is configured such that the first valve portion (71, 72, 73, 74) causes the first medium flow circuit and the second medium flow circuit to be in the communication state to raise a temperature of the internal combustion engine before driving of the internal combustion engine using heat of the electric power storage unit, characterized in that the vehicular heat exchange device is configured such that the first valve portion (71, 72, 73, 74) causes the first medium flow circuit and the second medium flow circuit to be in the non-communication state and the second valve portion (71, 72, 75) causes the first medium flow circuit and the third medium flow circuit to be in the communication state to raise the temperature of the internal combustion engine before driving of the internal combustion engine by heat of the drive motor switched from the heat of the electric power storage unit in a case where a temperature of the drive motor becomes at least a third temperature threshold value.