The present disclosure provides a blacklight and a display device. The blacklight of the present disclosure includes a backlight driving circuit, which includes a plurality of first signal lines and a plurality of second signal lines, a plurality of light string regions are defined by arranging the plurality of first signal lines and the plurality of second signal lines to cross each other, and a part of the plurality of light string regions are configured to be provided with light emitting diode (LED) light strings; the first terminals of LED light strings in a same row are coupled to a same first signal line, and the second terminals of LED light strings in a same column are coupled to a same second signal line.