The invention discloses an automatic polishing and feeding device of an electric kettle body. The device comprises a longitudinal feeding mechanism A, a horizontal feeding self-adaptive mechanism B and a clamping and rotating mechanism C, wherein the axial movement and feeding of a polishing device are achieved through the longitudinal feeding mechanism A; the radial movement and feeding of the polishing device are achieved through the horizontal feeding self-adaptive mechanism B; and the clamping and rotating mechanism C clamps the electric kettle body for rotation, and finally, the non-axisymmetrical convex surface kettle body of an electric kettle is automatically polished. The automatic polishing and feeding device of the electric kettle body has the advantages that (1) parts like the electric kettle body with non-axisymmetrical convex surfaces can be automatically polished, the workpiece convex surface does not need to be calculated and programmed, and the requirement on the operating personnel is low; (2) the structure is relatively simple, and the manufacturing cost is low; (3) through the utilization of the automatic polishing and feeding device, the polishing efficiency is high, and the uniformity of the product is good; and (4) the labor intensity of the operating personnel can be greatly reduced.