This stirrer is a new type of axial flow stirrer that can be used for liquid-liquid or liquid-solid two-phase suspension mixing. The blade's arbitrary cross-section of this stirrer consists of a segment of an arc and two warped straight edge segments at the ends. The outer edges of the two straight segments are composed of several semi-circular arcs forming a wavy curve, and the blade extends from the end to the root along the blade's central axis.