Under the condition that the casting dead head separator is not damaged, the casting head and runner as well as other spare parts can be separated. It is commonly used for grey cast iron (FC), nodular cast iron (FCD), alloy cast iron, cast steel (mild steel, high manganese steel etc.) and the operation will be easy. The high noise, the quantity of work, and the risks caused by beat of the hammer have been solved and the fragment and dust as well as the high time-consumption are also eliminated. So the work to remove the dead head has become easy, safe, environment friendly, energy saving and can be completed with one key.