In a method for regenerating ionic exchange resins (3) used for softening water and a device for softening water, a flow of brine (S) is fed into a housing compartment (2) of the resins (3) at a determined velocity and subsequently a first flow of water alone is fed at a lower velocity than the velocity of the flow of brine (S). The velocities are determined by a ratio between the passage section of a respective throat (8) for feeding the water, and the passage section of a nozzle (10) for feeding the brine (S).