The utility model provides a vehicle vent -pipe way separates heat exchanger and car for solve owing to whole vehicle bottom coil pipe way and spare part labyrinth, thereby lead to separating the problem that heat exchanger arranged the difficulty. The utility model discloses a vehicle vent -pipe way separates heat exchanger and includes: set up and separate the heat exchanger body between car body floor and vehicle vent -pipe way, it includes to separate the heat exchanger body: with car body cross member accordant connection's groove structure, respectively set up in the first connecting portion and the second connecting portion of groove structure's relative both sides, first connecting portion with all be provided with the installation base on the second connecting portion, it passes through to separate the heat exchanger body the installation base with the car body floor is connected. The utility model discloses separate the heat exchanger body through reasonable mounting point and the mating surface of arranging, can be reasonable utilize the chassis space, direct and vehicle body floor is connected compact structure, simple to operate.