The invention relates to a vehicle heat management device. After an engine (11) is started in an extremely cold environment, an electronic control unit (22) first supplies cooling water for the engine (11) to a throttle valve (12) and an EGR valve (13) and then controls a circulation path for the cooling water to supply the cooling water to a transmission oil warmer (18). As a result, malfunctioning of the throttle valve (12) and the EGR valve (13) due to freezing can be prevented to assure vehicle travel ability promptly, and favorable vehicle heat management can be achieved in an extremely cold environment.