The invention belongs to the technical field of oil product detection, and discloses an 
edible oil product color and luster, transparency and 
impurity detecting device. The device comprises an oil product conveying unit, a backlight bright field detecting unit, a top light dark field detecting unit, a polarized light dark field detecting unit, a detection control and 
image processing unit and a color and luster and transparency detecting unit, wherein the backlight bright field detecting unit obtains backlight bright 
field detection image information, the top light dark field detecting unit obtains top light dark 
field detection image information, the polarized light dark field detecting unit obtains polarized light dark 
field detection image information, the detection control and 
image processing unit is connected with the oil product conveying unit and the detecting units, controls actions thereof and processes the obtained detection image information, and the color and luster and transparency detecting unit projects detection 
signal light from one side of an oil product to be detected through a backlight source, collects light emitted from the oil product to be detected, and analyzes the spectral intensity and feature. The oil product to be detected is conveyed to the detection units in sequence through the oil product conveying unit, and the polarization direction of polarization detection light is perpendicular to that of a polarization analyzer. The 
edible oil product color and luster, transparency and 
impurity detecting device is efficient and high in reliability.