中文摘要：

青花菜含有天然活性成分萝卜硫素（sulforaphane），并且具有富硒能力。大量的流行病学、动物实验和临床研究表明，萝卜硫素和硒都具有抗多种癌症的生理功能，并且效果显著。已有的研究表明，硒与参与合成萝卜硫素的硫存在竞争效应，影响植物体内萝卜硫素含量。但两者在预防和治疗癌症中具有协同效应。硒和萝卜硫素的矛盾备受关注且对人类健康意义重大。本文综述了青花菜萝卜硫素和富硒能力的研究进展和关系，总结了二者抗癌功能的机制。

英文摘要：

Broccoli is a cruciferae vegetable which riches in sulforaphane and selenium（Se）. Lots of studies demostrate that sulforaphane or Se can reduce cancer risk. Recent research showed that Se have competitive effeet with sulfur. But sulfur is an essential component for sulforaphane, so it would reduce the sulforaphane content when plant uptake Se. However, sulforaphance and Se has synergistic effect in cancer prevention. The relationship between sulforaphane and Se is increasingly concerned. It will be more important for human health. The present paper is a review of the results of current researches concerning on sulforaphane and Se-rich capability and their relationship. Furthermore, we conclude the machanisms of cancer prevention with sulfroraphance and Se.