diff --git a/intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java b/intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java
index ef49ed2..5af8d08 100644
--- a/intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java
+++ b/intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java
@@ -2128,10 +2128,12 @@ public class DeviceDataHandler {
                     : params.getDouble("ph");
                 sensorData.setPh(value);
             }
-            // 注意：忽略大小写时 containsKey("salinity") 会误匹配 salinitySet，
-            // 已在取 params 时设置 ignoreCase=false，精确匹配 "salinity" key，不会取到 salinitySet
-            if (params.containsKey("salinity")) {
-                sensorData.setSalinity(params.getDouble("salinity"));
+            // 通过遍历 keySet 做精确字符串比较，彻底避免 Hutool ignoreCase 下 containsKey/getDouble 误匹配 salinitySet
+            for (String k : params.keySet()) {
+                if ("salinity".equals(k)) {
+                    sensorData.setSalinity(params.getDouble(k));
+                    break;
+                }
             }
             if (params.containsKey("treference") || params.containsKey("Treference")) {
                 Double value = params.containsKey("Treference") ?