Heat resistant cast iron plate is a type of cast iron used at high temperatures, which is widely valued for its excellent oxidation resistance, growth resistance, and thermal fatigue resistance. Usually, Cr, Si, and Al are the main elements that maintain its heat resistance, especially when used at around 1200K, Al seems to be. Aluminum heat-resistant cast iron plates are limited in their application due to their high brittleness and poor thermal fatigue resistance. There have been reports on the influence of rare earth elements on the microstructure and mechanical properties of ordinary cast iron, but the effect of Ce on the microstructure and mechanical properties of medium aluminum heat-resistant cast iron plates is still rarely studied.