The invention relates to a press-formed product technology, in particular to a pressed product demolding device and method. The pressed product demolding device comprises an air compressor, a vacuum pump, an air blowing pipeline, an air sucking pipeline, an air blowing electromagnetic valve and an air sucking electromagnetic valve. The air blowing pipeline comprises a main air blowing pipe and a branch air blowing pipe. The free end of the main air blowing pipe is connected with the air compressor, and the air blowing electromagnetic valve is arranged on the main air blowing pipe. The air sucking pipeline comprises a main air sucking pipe and a branch air sucking pipe. The free end of the main air sucking pipe is connected with the vacuum pump, and the air sucking electromagnetic valve isarranged on the main air sucking pipe. According to the demolding manner, the manner of air purging and vacuum adsorbing is adopted for demolding, mechanical damage to the surfaces of products is reduced to the maximum degree, mechanical damage of the demolding manners such as ejecting, knocking, impacting and pushing to the surfaces of the products is avoided, the damage probability of the products is reduced, the demolding manner can be applied to the pressed products with any shapes and any materials, the application range is wide, and the perfectness ratio of production of the pressed products is increased.