Abstract: The funtions of radar display and control software are becoming increasingly complex and huge.Traditional software architectures often result in complex linkage relationships between functional modules, It has high risks in software quality.How to achieve rapid and efficient product research and development while impoving software production efficiency and ensuring product quality so as to gain a competitive advantage? The arttical studies the commonalities and individual characteristics of radar display and control software, and analyzes software composition.Propose the framework, the basic building blocks, the share building blocks, and personal building blocks.Designed a multi-level modular building block architecture. The architecture has low coupling, high adaptability and convenient reuse. It greatly reduced the difficult of software reuse and impoved efficiency.