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四川盆地海相三叠系是四川探盐找钾的重要层位。通过地质背景的分析，盐类保存、水动力条件和水化学特征在不同水文地质区表现不一，反映在异常水型也极不一致。利用异常水点离子的比例系数在海水浓缩曲线图上的落点位置，判别水点成因类型，从而发现盆地东北宣汉、盆地西部平落和盆地东部万县向斜周边背斜水点具含钾溶滤水特征，值得重视和进一步探索。
The Triassic Triassic in the Sichuan Basin is an important reservoir for salt exploration in Sichuan. Through the analysis of geological background, salt preservation, hydrodynamic conditions and hydrochemical characteristics have different performances in different hydrogeological regions, which are also reflected in abnormal water types. It is found that the Xuanhan Basin in the northeastern part of the basin, the Pinglai basin in the west of the basin and the anticline in the anticline of the Wanxian syncline in the eastern part of the basin are characterized by the location of the falling coefficient of the proportion coefficient of the abnormal water spot ion on the seawater concentration curve. Potassium-depleted water filtration features deserve attention and further exploration.