diff --git a/ruoyi-wcs-shadow/src/main/java/com/ruoyi/shadow/kernel/Ft546ShadowScheduler.java b/ruoyi-wcs-shadow/src/main/java/com/ruoyi/shadow/kernel/Ft546ShadowScheduler.java
index e9e0410..8d05c9c 100644
--- a/ruoyi-wcs-shadow/src/main/java/com/ruoyi/shadow/kernel/Ft546ShadowScheduler.java
+++ b/ruoyi-wcs-shadow/src/main/java/com/ruoyi/shadow/kernel/Ft546ShadowScheduler.java
@@ -138,6 +138,10 @@ public final class Ft546ShadowScheduler implements AutoCloseable {
             LOGGER.warn("FT546 shadow source read failed: {}; retry after {} ms",
                     readFailure.getReasonCode(),
                     readFailure.getRetryAfter().toMillis());
+            if (readFailure.getCause() != null) {
+                LOGGER.warn("FT546 shadow source read root cause",
+                        readFailure.getCause());
+            }
             return false;
         }
         if (failure instanceof Error) {