摘要：目的 国内大多数肿瘤的发病率呈逐年上升趋势。肿瘤的发生发展与膳食关系密切，而鱼类是人类主要的食物来源。本文探讨鱼类摄入与多种常见肿瘤发病的关系。方法 检索相关文献资料，特别是相关的meta分析，对其结果进行汇总分析。结果 鱼类摄入降低肺癌及直肠癌的发病风险的证据较为充分，而其与其他恶性肿瘤的关系目前尚无肯定的结论。结论 要阐明鱼类摄入对肿瘤发病风险的影响，尚需更多高质量的流行病学研究。

Abstract: Objective The incidence of cancer showed an increasing trend in China in recent years. The development of cancer is closely related with diet, while fish is the main food source for humans. The aim of this study was to achieve a comprehensive assessment of the relationship between fish consumption and cancers risk. Methods Studies about fish intake and cancer risk, especially meta analysis were recruited and intensively summarized. Results Higher fish intake is associated with lower risk of lung cancer and colorectal cancer, but the associations of fish with risk of other cancers is controversial and inconclusive.Conclusions More well-designed epidemiological studies are warranted to further verify the effects of fish consumption on risk of various cancers.