This paper designed a dual-axis servo solar tracker based on single chip micyoco (SCM). The whole system consisted of minimum system of SCM, position detection circuit, irradiance comparison circuit, clock circuit, keyboard circuit, motor speed regu-lation circuit and angular position sensor. The software included the calculation of solar altitude and azimuth angle, the main program and each functional module subprograms. The results from debugging and running show that the system is stable, precisely tracking the sun in real time.%设计了基于单片机的双轴伺服太阳能跟踪器。整个系统由单片机最小系统、四路方位检测电路、辐照度比较电路、时钟电路、键盘电路、电机调速电路和角度传感器等组成，软件部分包括太阳高度角和方位角计算、主程序及各个功能模块子程序。经实物模型调试运行结果表明，系统工作稳定、实时性好，能够正确完成对太阳的跟踪。
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