In order to meet the high performance, real-time, and reliability requirements of modern embedded systems, multi-core processor technology has become a key means of solving complex task processing. Based on the PowerPC P2020 dual core processor and vxWorks6.9 real-time operating system, the implementation method of multi-core communication was studied. The characteristics of AMP, SMP, and BMP multi-core architectures were analyzed, and a multi-core system architecture based on SMP mode was designed. The research focuses on the design and implementation of multi-core startup processes, task scheduling strategies, and inter core communication mechanisms. Experimental tests have shown that through reasonable task allocation, load balancing scheduling, and efficient IPI and shared memory communication mechanisms, the P2020 dual core processor can significantly improve system performance, meet real-time and stability requirements, and provide theoretical basis and practical reference for the design and optimization of embedded multi-core systems.