An on-vehicle imaging device mounted on a vehicle, the on-vehicle imaging device comprising: an imaging unit (101, 801) for imaging a subject and having a sensitivity in at least a red region, which is hereafter referred to as R, a green region, which is hereafter referred to as G, a blue region, which is hereafter referred to as B, and an all visible light region including an infrared region, which is hereafter referred to as Cir; a signal processing unit for executing signal processing on a video signal in at least a plurality of different bands included in a video imaged by the imaging unit; a pixel signal distribution processing unit for extracting pixel signal distribution information depending on at least one signal included in the video signal processed by the signal processing unit; a white balance processing unit for conducting signal processing by using predetermined gains to cause the video signal to have a desired value; and a system control unit for performing control on the white balance processing unit and performing control on decision area information for the pixel signal distribution information extraction conducted by the pixel signal distribution processing unit, wherein the system control unit controls so as to set gains in the white balance processing unit to predetermined values in accordance with the pixel signal distribution information extracted by the pixel signal distribution processing unit, wherein the pixel signal distribution processing unit extracts pixel signal distribution information for at least one decision area by using a difference signal between an R signal and a Cir signal and a difference signal between a B signal and the Cir signal, which difference signal is in a signal distribution plane in the R-Cir and B-Cir direction, wherein the extracted signal distribution information is compared with predetermined distribution areas obtained for specific light sources, by two signals from a difference signal between an R signal and a Cir signal and a difference signal between a B signal and the Cir signal, which difference signal is in the signal distribution plane in the R-Cir and B-Cir direction, and it is decided from which specific light source the extracted pixel signal distribution information in the at least one decision area derives, and wherein the system control unit further sets the gain in the white balance processing unit to the predetermined value in accordance with the pixel signal distribution information deriving from the specific light source. an imaging unit (101, 801) for imaging a subject and having a sensitivity in at least a red region, which is hereafter referred to as R, a green region, which is hereafter referred to as G, a blue region, which is hereafter referred to as B, and an all visible light region including an infrared region, which is hereafter referred to as Cir; a signal processing unit for executing signal processing on a video signal in at least a plurality of different bands included in a video imaged by the imaging unit; a pixel signal distribution processing unit for extracting pixel signal distribution information depending on at least one signal included in the video signal processed by the signal processing unit; a white balance processing unit for conducting signal processing by using predetermined gains to cause the video signal to have a desired value; and a system control unit for performing control on the white balance processing unit and performing control on decision area information for the pixel signal distribution information extraction conducted by the pixel signal distribution processing unit, wherein the system control unit controls so as to set gains in the white balance processing unit to predetermined values in accordance with the pixel signal distribution information extracted by the pixel signal distribution processing unit, wherein the pixel signal distribution processing unit extracts pixel signal distribution information for at least one decision area by using a difference signal between an R signal and a Cir signal and a difference signal between a B signal and the Cir signal, which difference signal is in a signal distribution plane in the R-Cir and B-Cir direction,