数字通信系统的数据传输为了保证数据传输的有效性 ,常用的方法就是对传输数据进行 CRC校验。首先分析了CRC的校验原理 ,然后以常见的CRC-16为例 ,提出了生成CRC码的算法 ,给出了该算法的实现软件流程图 ,并在Windows平台上用 VC++实现。该算法实现简单 ,实时性强 ,非常适合于大数据块传输的情况。计算机仿真实验表明 ,这是一种有效地实现CRC校验码的方法 ,为通信系统的差错控制提供了一种简捷的解决方案。-Digital communication system of data transmission in order to ensure the validity of the data transmission, the commonly used method for data transmission is the CRC check. First analysis of the CRC check of principle, and then, with common CRC-16 as an example, this paper proposes the CRC code generation algorithm was presented, the software flow chart of the realization of the algorithm, and the Windows platform with vc++ realized. The algorithm is simple, good real-time, which is very suitable for large blocks of data transmission. Computer simulation experiments show that this is a kind of effectively achieve the CRC check code method, as the communication system error control provides a simple solution.