In the face of the increasingly complex electromagnetic environment of the battle field. A new generation of high anti-interference millimeter wave proximity fuze is urgently needed for long-range guided rocket. In order to break through 3 millimeter wave/8 millimeter wave integration rf front-end, dual channel multi-mode information fusion processing and other key technologies. The prototype of a novel dual-band complex ranging millimeter-wave fuze detector is developed by using the method of linear frequency modulated continuous wave and pulse doppler system which can be dynamically configured. It provides a solid technical support for the development of high-precision, high-interference and high-reliability close-in fuze model equipment for future combat applications in complex electromagnetic environment.