本文在莱州湾东南沿岸。用蒸发量、降水量和开采量指标实测资料建立了它们与地下水位负值区的相关模式；通过建立地下水位负值区面积与海水入侵面积之间的回归模型，揭示了地下水位负值区的产生和扩大是导致海水入侵发生和发展的主导因素，并用量化指标加以反映。最后对海水入侵的发展规律和防治措施进行了讨论。 This article is on the southeast coast of Laizhou Bay. Based on the measured data of evapotranspiration, precipitation and extraction, the correlation models between them and the negative value of groundwater table were established. By establishing the regression model between the negative value of groundwater table and the area of ​​seawater intrusion, the negative value of groundwater table The occurrence and expansion of seawater intrusion are the main factors leading to the occurrence and development of seawater intrusion, and are reflected by quantitative indicators. Finally, the development of seawater invasion and prevention measures were discussed.