Abstract: An LED display mask and an LED display are provided. The LED display includes at least two first frame strips and at least two second frame strips which are orthogonal to each other and form a rectangular mesh body. The rectangular mesh body is fixed to a bottom case of an LED module and has at least two unclosed sides. The tail ends of the frame strips orthogonal to the unclosed sides exceed the outside frame strips parallel to the unclosed sides. The LED display mask and the LED display solve the problem that the existing adjacent masks on the LED display bulge at the junctions because of unmatched dimensions or thermal expansion, resulting in black shadows and dark areas on the display. With the present invention the excessive parts can be easily cut when adjacent masks extend mutually to form bulges without affecting the characteristics of the display.