The invention discloses a rotation radial pulse generator and a generation method thereof. The rotation radial pulse generator mainly comprises a shell, a stator panel, at least one set of stator channels, a rotor panel, a power device, a rotation shaft and at least one set of rotor channels. The generation method specifically comprises the steps of importing a medium into a rotor chamber from a medium inlet under certain pressure; starting the power device; driving the rotor panel to rotate by the rotation shaft under the drive of the power device; alternatively realizing connection and disconnection of three sets of rotor channels and eighteen sets of rotor channels in the rotation process; and forming periodic radial pulses by the medium at an outlet. The rotation radial pulse generator provided by the invention is simple and compact in structure and convenient in use, and standard half sine radial oscillation jet flow can be produced by employing liquid or gas medium.