Relating to the technical field of evaporation, the embodiment of the invention provides a mask, a mask evaporation component and an evaporation device, and can solve the problem that large gaps existbetween support bars and a to-be-evaporated substrate on the mask, an evaporation material easily invades and deposits at the gaps during film layer evaporation, and therefore great difference existsbetween the film pattern of mask evaporation and the mask pattern. The mask includes: a mask body, which comprises a mask frame and a mask part surrounded by the mask frame, wherein the mask part includes a plurality of mask pattern areas and invalid areas between adjacent mask pattern areas; support bars, which have both ends fixed on the mask frame, stride over the mask part and is projected inthe invalid areas, and are used for supporting the mask body; and lifting components, which are disposed at the ends of corresponding support bars on the mask frame, and can drive the ends of the support bars to move along the a direction perpendicular to a plane wherein the mask frame is located and away from the mask frame.