This paper delves into the applications and the technological advancements of silicon-based analog beam- forming chips in high-frequency, high-bandwidth communication and phased-array radar systems. The context of 5G and the prospective 6G networks, which impose increasingly stringent demands on data transmission rates, anti-interference capabilities, and signal quality, So beam-forming technology has emerged as a pivotal factor in enhancing the performance of both communication and radar systems. Initially, this paper expounds on the fundamental principles of silicon-based analog beam-forming chips, highlighting their distinctive advantages in terms of low power consumption, high integration, and precise beam control. Moreover, it explores in depth exploration of the strategies for optimizing the silicon-based material processing techniques to improve frequency response and bandwidth handling capabilities. Subsequently, the paper elaborates on the key technologies embodied in silicon-based analog beamforming chips, including attenuators and phase shifters. Conclusively, the paper offers a forward-looking perspective on the future development trends of silicon-based analog beam-forming chips. Particular emphasis is placed on discussing the potential of technologies such as adaptive beam-forming, low-latency control, multi-functional integration, and the application of novel materials. The novelty of this research lies in the introduction of beam isolation technology, and the proposition of a viable approach to enhance frequency response and bandwidth processing capabilities through the optimization of silicon-based processes. This contributes to providing essential technical support for future wireless communication and radar systems.