This article summarized the currentl research of metachronous liver metastasis abroad,and deduced that the tumor cells may shift to liver before,during and after resection for colorectal cancer.

• 本文就目前对异时性肝转移的国外研究进行总结和分析：肿瘤细胞可能在术前、术中及术后转移到肝脏；