A radar device for a vehicle, according to an embodiment of the present invention, comprises: a case; a first printed circuit board (PCB) that is accommodated in the case and has a plurality of antenna arrays and an integrated circuit (IC) chip that are formed thereon, wherein the IC chip is connected to the plurality of antenna arrays; and a radome that is coupled to the case and covers the first printed circuit board, wherein the radome includes: a cover facing the first printed circuit board; a first wall connected to the cover surface; and a second wall connected to the cover and facing the first wall, wherein the internal angle between the cover and the first wall and the internal angle between the cover and the second wall are formed to be greater than 90° and less than 180°.