A device and method for aligning preforms in a row and righting same, the method being intended for use with axisymmetric preforms having an annular supporting face. The method includes a first step of discharging the preforms in bulk onto a rotating horizontal platen; a second step of aligning the preforms against a fixed peripheral rail by way of the centrifugal force produced by the rotation of the rotating platen; a third step of successively righting the aligned preforms by tilting the preform bodies, performed under the annular supporting face. During the second alignment step, the main axis of the preforms is oriented essentially tangentially to the direction of movement.