A backlight split control apparatus and a backlight split control method using the same are provided. The backlight split control apparatus, which is a split control apparatus of the backlight divided into a plurality of sections, includes an image signal processor for calculating a section luminance control value which is a representative luminance value of the section, from an image signal; a control signal generator for calculating a backlight control value which is a control signal of the backlight, by correcting a section luminance calculation value using a difference between the section luminance control value and the section luminance calculation value acquired from a section luminance distribution value of a light source of the backlight; and an image signal regulator for adjusting the image signal using the backlight control value.