To provide a method for manufacturing an electret material which improves the adhesion between a resin layer to be an electret layer and an electrode plate.

The method for manufacturing an electret material includes: applying dispersing liquid which contains polytetrafluoroethylene particles and also contains 10 to 300 pt.wt. of polyether ether ketone particles in 100 pt.wt. of the polytetrafluoroethylene particles on the electrode plate and then drying the dispersing liquid; and further, burning the polytetrafluoroethylene particles and the polyether ether ketone particles to form a mixed resin layer on the electrode plate. After that, electrification processing is applied to the surface of the mixed resin layer.