The invention discloses a quantum dot light guide plate, a backlight module, and a liquid crystal television. The quantum dot light guide plate comprises a rectangular light guide plate, the rectangular light guide plate comprises a first side surface, a second side surface, a third side surface, a fourth side surface, and a light-outlet surface and a backlight surface arranged in an opposite manner, the light-outlet surface is provided with a quantum dot layer including red quantum dots and green quantum dots, the first side surface of the rectangular light guide plate is provided with at least a light source hole used for placing a blue light LED, and the backlight surface, the second side surface, the third side surface, and the fourth side surface are respectively provided with reflective layers. According to the quantum dot light guide plate, the backlight module, and the liquid crystal television, the color gamut range is greatly expanded, the color expression is good, and the energy-saving effect is good.