Annular fuel is an economy and safety promising kind of new fuel element.In order to analyze the possibility of utilizing annular fuel in commercial PWRs,based on the CMS code package,the steady state reactor core of Qinshan phaseⅡNPP with four groups of annular fuel leading test assembly was designed using the proposed method and the core physical performance of PWRs with annular fuel and the compatibility Annular fuel is an economy and safety kind of new fuel element. In order to analyze the possibility of utilizing annular fuel in commercial PWRs, based on the CMS code package, the steady state reactor core of Qinshan phase II NPPP with four groups of annular fuel leading test assembly was designed using the proposed method and the core physical performance of PWRs with annular fuel and the compatibility