The invention relates to a centrifugal impeller of a stamped part. The centrifugal impeller comprises a wheel hub, and a front cover and a back cover formed by stamping. A water inlet hole with a turnup is formed in a center position of the front cover, a center hole connected to the wheel hub is formed in a center position of the back cover, and the impeller also comprises a plurality of blades.The blades comprise along blades and short blades, the long and short blades are arc-shaped strip like, the short blades are 2/3 long of the long blades, and the long and short blades are arranged between the front cover and the back cover alternately and uniformly. One ends of the long blades are aligned to the circumferences of the front and back covers while the other ends of the long blades are aligned to the circumference of the center hole, and one ends of the short blades are aligned to the circumferences of the front and back covers. The impeller is manufactured by using a stamping workpiece, so that the impeller is smaller in density, higher in strength and more corrosion-resistant. The surface of the workpiece is smoother. One short blade is additionally arranged between every two adjacent original blades. The structure further improves the work efficiency, the liquid supplying ability of a water pump is improved greatly, and similarly, the service life of the impeller is prolonged, and the using cost is lowered.