中文摘要：

海底地下水排泄是全球水循环的重要组成部分,是近岸、滩涂和河口地区典型而重要的海水—地下水相互作用过程。作为全球水循环的重要组成部分,海底地下水排泄是海洋中水和各种化学物质的重要来源之一,同时也是各种污染物从陆地向海洋输送的一个重要而隐蔽的通道。综述了海底地下水排泄（SGD）的研究现状与进展,对海底地下水排泄的过程、研究方法、研究分布以及环境意义等方面进行了详细介绍,指出了目前研究存在的不足和需要努力的方向,从而为我国开展大规模海底地下水排泄研究提供了一定的思路。

英文摘要：

Submarine Groundwater Discharge（ SGD）,an important component of global water cycle,typical and important seawater-groundwater interaction process in coasts,intertidal zones and estuaries,is recently recognized as a research highlight on the land-ocean interaction. As an important component of global water cycle,SGD is not only one of the important sources of water and chemicals in the ocean,but also an important but hidden pathway for various contaminants transport between land and ocean. This paper reviews the research status and progresses of SGD,with a detailed description of the groundwater discharge process,research methods and spatial distribution and their corresponding environmental significance,etc. The deficiencies in present studies and prospects for future research are proposed to provide some thoughts and scientific basis for the research of large-scale SGD in our country.