The invention provides a ceramic core removal device which mainly structurally comprises a high-pressure reaction vessel (1), a stainless steel basket (3), a pressure pump (5), an air storage chamber (6), a foam disk (7), heating elements (8), a pressure release valve (9), a safety valve (10) and a lifting mechanism (11). In the use process of the ceramic core removal device, a large number of tiny bubbles are blown into an alkali solution (4) in a pressurizing manner and penetrate through various pores in a hollow blade (2) to reach a deep position of a ceramic core, a reaction product rapidly diffuses into the alkali solution by the high-speed scouring action of the bubbles on a solid-liquid interface reaction layer, contact of the alkali solution and the ceramic core is constantly ensured, normal reaction is ensured, and removal of the ceramic core is greatly accelerated.