The invention discloses a display with a switchable viewing angle and an operating method thereof. The display comprises a first pixel and a second pixel. The first pixel is provided with a first sub-pixel and a second sub-pixel, and the second pixel is provided with a third sub-pixel, a fourth sub-pixel and a fifth sub-pixel. The fifth sub-pixel is used for enabling energy in a narrow viewing angle mode, and forbidding energy in a wide viewing angle mode. When the fifth sub-pixel enables energy, the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are affected by the fifth sub-pixel, the viewing angle is relatively small, when the fifth sub-pixel forbids energy and does not emit light, the viewing angle is relatively large. Because the second pixel of the display is provided with the fourth sub-pixel and the fifth sub-pixel, a peep-proof effect is achieved, and the display can have a better aperture opening ratio in the narrow viewing angle mode.