The invention relates to a hollow billet and a manufacturing method thereof, and especially relates to a large-size and high-strength super hard hollow billet and a manufacturing method thereof. The purpose of the invention is to solve the problems of low yield, large production workload and difficult process control of casting of aluminum alloy hollow ingots prepared in the prior art. The large-size and high-strength super hard hollow billet comprises Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti, B and Al. The manufacturing method comprises the following steps: 1, weighing; 2, smelting; 3, refining and casting of melt; and 4, molding. The method is mainly used for manufacturing the large-size and high-strength super hard hollow billet.