This paper presents a design of a a high-precision shaft angle acquisition system used in the solar panel by the implementation of absolute round induetosyn as angle sensor, the Direct Digital Synthesizer (DDS) and resolver to digital converter (RDC), and the AVR micro controller which is used as the central processor. This paper also introduces the principle of the system, circuit design, algorithm structure and feasibility analysis. By Researching the latest developments and key technologies in this field and Analyzing of the feasibility of the shaft angle Acquisition System used in the solar panel, the detailed design and implementation of the program is also given. The program has the advantage of high-precision, small size, fast tracking, Strong anti-jamming, low cost, able to work in harsh environments. The system has very high utilizable values.