Mixing pile blade

The invention relates to a mixing pile blade, which adopts the structure that a driving device is connected with a drill rod, and the drill rod is fixedly connected with a mixing blade. The main technical characteristics are that the outer side of the mixing blade is an arc, namely, an outer cambered surface; the outer side of the mixing blade adopts the structure that the mixing blade is firstly contacted with one side of a soil layer during the rotation; an alloy is arranged on the outer cambered surface; and the rotation direction of the mixing blade is from the inner cambered surface to the outer cambered surface. The mixing pile blade solves the defects that the construction of the mixing pile is difficult and the construction quality is seriously affected due to the fact that the mixing blades of the mixing pile are wound by abandoned drain boards during the piling; the arc outer cambered surface of the mixing blade propels forwards and pushes the drain boards away, and prevents the winding of the drain