Abstract: Due to the excellent anti-corrosion performance of FeCrAl stainless steel, it has become one of the most important and leading cladding options as accident tolerant fuel（ATF） cladding material. This paper focuses on the in-pile performance analysis of fuel rods with FeCrAl cladding, and provides suggestion on the future FeCrAl study and its application. This paper makes an introduction about FeCrAl cladding background and performance model, and uses FUPAC code to make analysis on the in-pile steady state performance. The results show that the core design criteria can be satisfied.