Vibration rotating sand feeding device capable of selecting areas and sand feeding method thereof

The invention discloses a vibration rotating sand feeding device capable of selecting areas and a sand feeding method thereof. The vibration rotating sand feeding device comprises a rotating sand feeding mechanism and a vibration mechanism, wherein the rotating sand feeding mechanism comprises a bracket, a motor, a first area selecting piece, a second area selecting piece and a material-receivingfunnel, a sand feeding cavity is formed in the bracket, the material-receiving funnel is arranged on the bracket, and the material-receiving funnel communicates with the sand feeding cavity; the motoris installed on the bracket, and is used for driving a milling and grinding head base body to rotate; the first area selecting piece is provided with a first falling opening corresponding to an edgearea of the end surface of the milling and grinding head base body, the second area selecting piece is provided with a second falling opening corresponding to a middle area of the end surface of the milling and grinding head ba