Glass flatness detection equipment

The invention discloses glass flatness detection equipment which comprises a base, a supporting plate, an air cylinder and a placing plate, and a plurality of first through holes are symmetrically formed in the surface of the placing plate. Through cooperative use of an air groove, a first air bag, an adjusting pipe, a hose, a blocking block and a second air bag, air in the air groove can be extracted through the first air bag in the lifting process of the placing plate, so that the interior of the air groove is in a negative pressure state, and glass of different thicknesses can be fixed; meanwhile, the situation that the surface of the glass is scratched due to clamping can be avoided, after glass detection is completed, a worker can control a placement plate to descend so that a first air bag can spray part of extracted gas into a second air bag, and therefore the second air bag drives a blocking block to not block communication between a second through hole and a first mounting groove any more; therefore,