Abstract: The digital feature of the fuze RF front-end is an important part of the fuze mathematical model. The paper not only analyzes the structures of fuze transmitter and receiver but also establishes mathematical models of the vital components of the RF front-end. Based on C++, we have fulfilled the modeling and simulation of fuze RF front-end, and compared it with the ADS simulation results. The results indicate that the modeling based on C++ is effective, simulation accuracy is meeting the system requirements and what’s more, simulation based on C++ performs better than commercial simulation software in terms of speed.