diff --git a/jsowell-common/src/main/java/com/jsowell/common/util/YKCUtils.java b/jsowell-common/src/main/java/com/jsowell/common/util/YKCUtils.java
index e83288ecc..aacc527b9 100644
--- a/jsowell-common/src/main/java/com/jsowell/common/util/YKCUtils.java
+++ b/jsowell-common/src/main/java/com/jsowell/common/util/YKCUtils.java
@@ -142,7 +142,9 @@ public class YKCUtils {
 	public static String transitionTemperature(byte[] bytes) {
 		String s = BytesUtil.binary(bytes, 10);
 		int i = Integer.parseInt(s);
-		i = i - 50;
-		return String.valueOf(i);
+		if (i > 0) {
+			return String.valueOf(i - 50);
+		}
+		return "一";
 	}
 }