Abstract: BEAVRS is a new benchmark based on 1960’s the United States commercial reactor with detailed core construction parameters and operating measurement data for the verification of reactor analysis tool. In this paper, RMC, developed by the Department of Engineering Physics of Tsinghua University for reactor physics analysis, is adopted in the modeling of BEAVRS benchmark, to calculate a series important parameters such as the critical effective multiplication factor under different boron concentration and control rod step number, the control rod worth, the temperature coefficient and U235 fission rate in the instrument tube. The result goes on well with the measured data and the results from similar software, which verified the accuracy and reliability of RMC in the reactor criticality analysis.