The invention relates to an LED display screen. Light-emitting tube arrays are formed on the LED display screen by taking red, blue, green and yellow light-emitting tubes or red, blue, green and indigo light-emitting tubes as display units, and space between columns is twice of space between rows, or vice versa; each 2x2 light-emitting tube array comprises red, blue, green and yellow light-emitting tubes or red, blue, green and indigo light-emitting tubes, four light-emitting tubes in different colors are combined into four primary-color pixel points, and a light-emitting tube is enabled to participate in the process of imaging of eight adjacent pixel points through virtual mapping,, so that resolution ratio of the display screen is guaranteed, color gamut of the display screen is increased, and manufacturing cost is lowered.