To provide a vehicular radar system capable of reducing kinds of correcting members having a reference face, and a manufacturing method therefor.

This vehicular radar system includes a beam emitting part for emitting a beam, a casing 12 for mounting the beam emitting part, and a reference part 20 fixed to the casing 12 and having the plurality of faces 21, 22 serving as the reference face, and angles 1, 2 between a face fixed with the reference part 20 of the casing 12 and the reference face 21 or 22 are different depending on the face used as the reference selected from the plurality of faces 21, 22 serving as the reference face, when fixing the reference part 20 to the casing 12, in the vehicular radar system. The present invention discloses also the manufacturing method therefor.