A method used for reducing shutter 3D liquid crystal display crosstalk, comprising: receiving digital information of an original left eye image and of an original right eye image (S60); comparing if the grayscale values of corresponding pixel points in the digital information of the left eye image and in the digital information of the right eye image are identical (S61); adjusting the grayscale values of the pixel points of the left and right eye images that are identical in the comparison result on the basis of a first grayscale comparison chart of a current scan line of the image pixel points (S62); adjusting the grayscale values of the pixel points of the left and right images that are different in the comparison result on the basis of a second grayscale comparison chart of the current scan line of the image pixel points (S63); and, transmitting outwards the digital information of the left eye image and of the right eye image having all of the scan lines adjusted in grayscale values (S66). Also disclosed are a device used for reducing the shutter 3D liquid crystal display crosstalk and a corresponding liquid crystal display device. The device and method allow for elimination or reduction of crosstalk between the left and right eyes.