Abstract: Traditional radar display and control software architectures have complex linkage relationships between modules, it result in low communication efficiency and other quality issues. Based on the studies of the characteristics of radar display and control software, solution-"building blocks"is proposed in this paper. It resolves issues of complex structure and low efficiency.By analysing the functions of display and control software, the building blocks architecture is designed, including the framework, basic blocks, shared blocks and personal components. Through application, building blocks architecture has low complexity, high adaptability and ease of reuse. It greatly reduced the difficult of reusing and improved efficiency.