A vehicle heat exchange system comprising: a plurality of cooling fans (21, 22) for generating a flow of cooling air; a high-temperature side radiator unit configured to transfer heat between a cooling liquid discharged from a high-temperature heat source and the cooling air generated by the plurality of cooling fans (21, 22), and supply the cooling liquid to the high-temperature heat source again; and a low-temperature side radiator unit configured to transfer heat between a cooling liquid discharged from a low-temperature heat source whose temperature is less than that of the high-temperature heat source and the cooling air generated by the plurality of cooling fans (21, 22), and supply the cooling liquid to the low-temperature heat source again, characterized in that the high-temperature side radiator unit includes: a first high-temperature side radiator that faces a first fan, which is a part of the plurality of cooling fans (21, 22), and is connected to a high-temperature side discharge pipe for discharging the cooling liquid from the high-temperature heat source; a second high-temperature side radiator that faces a second fan, which is different from the first fan among the plurality of cooling fans (21, 22), and is connected to a high-temperature side supply pipe for supplying the cooling liquid to the high-temperature heat source; and a high-temperature side connection pipe for supplying the cooling liquid from the first high-temperature side radiator to the second high-temperature side radiator, and the low-temperature side radiator unit includes: a first low-temperature side radiator that is arranged so as to face the second high-temperature side radiator on an upstream side of the flow of the cooling air, and is connected to a low-temperature side discharge pipe for discharging the cooling liquid from the low-temperature heat source; a second low-temperature side radiator that is arranged so as to face the first high-temperature side radiator on the upstream side of the flow of the cooling air, and is connected to a low-temperature side supply pipe for supplying the cooling liquid to the low-temperature heat source; and a low-temperature side connection pipe for supplying the cooling liquid from the first low-temperature side radiator to the second low-temperature side radiator. a plurality of cooling fans (21, 22) for generating a flow of cooling air; a high-temperature side radiator unit configured to transfer heat between a cooling liquid discharged from a high-temperature heat source and the cooling air generated by the plurality of cooling fans (21, 22), and supply the cooling liquid to the high-temperature heat source again; and a low-temperature side radiator unit configured to transfer heat between a cooling liquid discharged from a low-temperature heat source whose temperature is less than that of the high-temperature heat source and the cooling air generated by the plurality of cooling fans (21, 22), and supply the cooling liquid to the low-temperature heat source again, characterized in that the high-temperature side radiator unit includes: a first high-temperature side radiator that faces a first fan, which is a part of the plurality of cooling fans (21, 22), and is connected to a high-temperature side discharge pipe for discharging the cooling liquid from the high-temperature heat source; a second high-temperature side radiator that faces a second fan, which is different from the first fan among the plurality of cooling fans (21, 22), and is connected to a high-temperature side supply pipe for supplying the cooling liquid to the high-temperature heat source; and a high-temperature side connection pipe for supplying the cooling liquid from the first high-temperature side radiator to the second high-temperature side radiator, and a first high-temperature side radiator that faces a first fan, which is a part of the plurality of cooling fans (21, 22), and is connected to a high-temperature side discharge pipe for discharging the cooling liquid from the high-temperature heat source; a second high-temperature side radiator that faces a second fan, which is different from the first fan among the plurality of cooling fans (21, 22), and is connected to a high-temperature side supply pipe for supplying the cooling liquid to the high-temperature heat source; and a high-temperature side connection pipe for supplying the cooling liquid from the first high-temperature side radiator to the second high-temperature side radiator, and a first low-temperature side radiator that is arranged so as to face the second high-temperature side radiator on an upstream side of the flow of the cooling air, and is connected to a low-temperature side discharge pipe for discharging the cooling liquid from the low-temperature heat source; a second low-temperature side radiator that is arranged so as to face the first high-temperature side radiator on the upstream side of the flow of the cooling air, and is connected to a low-temperature side supply pipe for supplying the cooling liquid to the low-temperature heat source; and a low-temperature side connection pipe for supplying the cooling liquid from the first low-temperature side radiator to the second low-temperature side radiator.