The invention belongs to the technical field of high temperature alloy hollow blade removing, and relates to a method and facility for removing a ceramic core in an aviation hollow blade. According tothe method, a hollow blade with a ceramic core is placed in a reactor filled with alkaline liquor, then a core removing kettle is sealed and vacuumized to form a negative pressure environment in thecore removing kettle, namely, gas in the hollow blade is discharged, due to the surface tension of the alkaline liquor, the alkaline liquor rapidly penetrates to all parts in the cavity of the hollowblade; then a heating and rotation fixing device is used to drive the hollow blade to accelerate the reactions; at the same time, a discharge valve is used to obtain a normal air pressure; the fixingdevice is lifted, the hollow blade is rotated above the alkaline liquor, due to the centrifugal effect, reaction products are thrown out rapidly from the inner of the cavity, the reaction products will not impede the reactions, the contact between the alkaline liquor and the ceramic core is guaranteed, the reaction efficiency is improved, the residual core is reduced, and the ceramic core removingspeed and efficiency are obviously enhanced.