对黄河营海水入侵区水一岩间的阳离子交换进行了一系列的室内实验研究，实验包括对研究区所取土样进行的阳离子交换容量及交换盐基分量（Ｋ＋、Ｎａ＋、Ｃａ２＋、Ｍｇ２＋）的测定、利用研究区所取土样与当地海水和地下淡水按不同比例配成的交换液进行的阳离交换实验、以及利用所取土样与海水进行的淋滤实验。实验结果表明，海水入侵过程中一岩间发生了阳离子交换反应，且以Ｎａ＋—Ｃａ２＋间的交换为主，其次是及Ｍｇ２＋—Ｃａ２＋间的交换，而Ｋ＋—Ｃａ２＋间的交换量很少。含水介质对Ｋ＋则表现为强烈的化学吸附 A series of laboratory experiments were conducted on the cation exchange between water and rock in the seawater intrusion area in the Yellow River camp. The experiments included the cation exchange capacity and the exchange basal components (K +, Na +, Ca2 +, Mg2 +) of soil samples taken from the study area, , The cation exchange experiments using the exchange fluid with different proportion of the soil samples taken from the study area and the local seawater and fresh groundwater, and the leaching experiments using the soil taken and the seawater taken. The experimental results show that there is a cation exchange reaction between one rock in the process of seawater intrusion, with the exchange between Na + -Ca2 +, followed by the exchange between Mg2 + -Ca2 + and the exchange between K + -Ca2 +. Aqueous media showed strong chemisorption on K +