diff --git a/core/src/main/java/com/citahub/cita/protocol/core/methods/request/Transaction.java b/core/src/main/java/com/citahub/cita/protocol/core/methods/request/Transaction.java
index 2cc8a379..0ae6f5dc 100644
--- a/core/src/main/java/com/citahub/cita/protocol/core/methods/request/Transaction.java
+++ b/core/src/main/java/com/citahub/cita/protocol/core/methods/request/Transaction.java
@@ -252,6 +252,6 @@ private static String processValue(String value) {
     }
 
     private static String processTo(String to) {
-        return !Strings.isEmpty(to) && Keys.verifyAddress(to) ? cleanHexPrefix(to).toLowerCase() : "";
+        return !Strings.isEmpty(to) && Keys.verifyAddress(to.trim()) ? cleanHexPrefix(to).toLowerCase() : "";
     }
 }