An exhaust heat recovery apparatus (3) is installed below a floor supported by both side members (11, 12) of a vehicle to recover heat from exhaust gas passing through an exhaust pipe (1) of an internal combustion engine. Assistance members (15, 16), which extend in the fore-and-aft direction of the vehicle, are provided between the both side members (11, 12) of the vehicle. The exhaust heat recovery apparatus (3) is installed close to one of the assistance members (15, 16).