本文提出并研究设计了一个基于ARM和uC/OS一11的自动气象站实时多任务数据采集系统，完成了系统的硬件和软件设计。该系统以犯位高性能ARM微处理器S3C44BOX为硬件核心，扩展了10/100M以太网接口、USB2.0接口、RS232串口以及DE接口等通用接口 以嵌入式实时操系统uC/OS-II为软件平台，在ARMSDT.251环境下进行系统软件的开发。该系统充分利用了ARM微处理器高性能、低功耗、低成本的优势，发挥了uC/OS-II可移植性好、开发成本低的点，为自动气象站的数据采集提供了一个经济实用的解决方案。-In this paper, and designed a study based on the ARM and uC/OS-11 automatic weather station data acquisition in real-time multi-tasking system, the completion of the system' s hardware and software design. The system is committed S3C44BOX bit microprocessor for high-performance ARM core hardware to expand the 10/100M Ethernet interface, USB2.0 interface, RS232 serial port as well as the common interface, such as DE interface　to embedded real-time systems Cao uC/OS-II for the software platform, ARMSDT.251 environment in the software development system. The system makes full use of high-performance ARM microprocessor, low power, low-cost advantages, has played a uC/OS-II portability, and the development of low-cost point for the automatic weather station data collection provides an economic practical solutions.