现代的IC芯片包含丰富的触发器，不同电路的时钟驱动源存在频率和相位的差异，因而出现了跨不同时钟区域进行异步数据传输的要求。亚稳态问题是异步数据传输过程面临的主要问题，本文提出多种跨越异步时钟边界传输数据的方法，它们包括FIFO法和脉冲展宽处理等同步方法。 -Modern IC chip contains a wealth of trigger, the clock drive source different circuit exists between the frequency and phase, resulting in different clock regions across asynchronous data transmission requirements. Metastability problem is asynchronous data transfer process is facing a major problem, we propose a variety of data transmission across the asynchronous clock boundary methods, which include FIFO method and the pulse width processing synchronization method.