In view of the fact that the inherent characteristics of conventional corner reflectors can not meet the requirements of special occasions, based on the study of large-scale RCS distribution characteristics, through the regional division design of embedded corner reflectors, FEKO software is used to model and simulate the new corner reflectors, and the RCS amplitude variation law of embedded trihedral corner reflectors is obtained. The analysis results show that the RCS fluctuation characteristics of the embedded corner reflector are closer to the real target RCS characteristics to a certain extent, which meets the practical application of special occasions and has practical engineering value.