diff --git a/inside-notices/src/main/java/cn/axzo/msg/center/inside/notices/service/impl/v3/msg/MessageMappingProcessor.java b/inside-notices/src/main/java/cn/axzo/msg/center/inside/notices/service/impl/v3/msg/MessageMappingProcessor.java
index d3234cba..66048567 100644
--- a/inside-notices/src/main/java/cn/axzo/msg/center/inside/notices/service/impl/v3/msg/MessageMappingProcessor.java
+++ b/inside-notices/src/main/java/cn/axzo/msg/center/inside/notices/service/impl/v3/msg/MessageMappingProcessor.java
@@ -19,7 +19,6 @@ import org.springframework.stereotype.Component;
 
 import java.util.List;
 import java.util.Map;
-import java.util.function.Function;
 
 import static java.util.function.Function.identity;
 import static java.util.stream.Collectors.toMap;
@@ -40,7 +39,7 @@ public class MessageMappingProcessor implements EventMappingProcessor {
     private final ImClient imClient;
 
     /**
-     * @Scope("prototype") -> we're good
+     * Scope("prototype") -> we're good
      */
     @Setter
     private TemplateMessage template;
@@ -70,7 +69,7 @@ public class MessageMappingProcessor implements EventMappingProcessor {
     public TemplateSendResultV3 buildTemplateSendResult() {
         TemplateSendResultV3 templateResult = new TemplateSendResultV3();
         templateResult.setTemplateCode(template.getTemplateCode());
-        templateResult.setBizActionCategory(template.getConfig().getCategory());
+        templateResult.setChannel(template.getConfig().getCategory());
         for (MessageRecordV3 message : template.getMessageRecords()) {
             templateResult.addResult(new MessageSendResultV3(
                     message.getReceiverPersonId(), message.getId()));
diff --git a/inside-notices/src/main/java/cn/axzo/msg/center/inside/notices/service/impl/v3/msg/TemplateMessage.java b/inside-notices/src/main/java/cn/axzo/msg/center/inside/notices/service/impl/v3/msg/TemplateMessage.java
index edf5cd80..edcd75e5 100644
--- a/inside-notices/src/main/java/cn/axzo/msg/center/inside/notices/service/impl/v3/msg/TemplateMessage.java
+++ b/inside-notices/src/main/java/cn/axzo/msg/center/inside/notices/service/impl/v3/msg/TemplateMessage.java
@@ -138,22 +138,16 @@ public class TemplateMessage {
     // ------------------------------- 辅助方法
 
     String parseTitle() {
-        if (title != null) {
-            return title;
+        if (title == null) {
+            title = PlaceholderResolver.tryResolve(template.getTitle(), req.getBizExtParams());
         }
-        title = req.getBizExtParams() == null
-                ? template.getTitle()
-                : PlaceholderResolver.resolve(template.getTitle(), req.getBizExtParams());
         return title;
     }
 
     String parseContent() {
-        if (content != null) {
-            return content;
+        if (content == null) {
+            content = PlaceholderResolver.tryResolve(template.getContent(), req.getBizExtParams());
         }
-        content = req.getBizExtParams() == null
-                ? template.getContent()
-                : PlaceholderResolver.resolve(template.getContent(), req.getBizExtParams());
         return content;
     }
 
diff --git a/msg-center-api/src/main/java/cn/axzo/msg/center/api/response/v3/MessageSendResultV3.java b/msg-center-api/src/main/java/cn/axzo/msg/center/api/response/v3/MessageSendResultV3.java
index e17a68fa..cb894cdb 100644
--- a/msg-center-api/src/main/java/cn/axzo/msg/center/api/response/v3/MessageSendResultV3.java
+++ b/msg-center-api/src/main/java/cn/axzo/msg/center/api/response/v3/MessageSendResultV3.java
@@ -17,11 +17,11 @@ import java.io.Serializable;
 @AllArgsConstructor
 public class MessageSendResultV3 implements Serializable {
     /**
-     * 接收者ID
+     * 接收者id
      */
     private Long receiverPersonId;
     /**
-     * 消息id或者待办id
+     * 渠道结果id
      */
     private Long resultId;
 
diff --git a/msg-center-api/src/main/java/cn/axzo/msg/center/api/response/v3/TemplateSendResultV3.java b/msg-center-api/src/main/java/cn/axzo/msg/center/api/response/v3/TemplateSendResultV3.java
index e44d8771..d0346a47 100644
--- a/msg-center-api/src/main/java/cn/axzo/msg/center/api/response/v3/TemplateSendResultV3.java
+++ b/msg-center-api/src/main/java/cn/axzo/msg/center/api/response/v3/TemplateSendResultV3.java
@@ -28,10 +28,11 @@ public class TemplateSendResultV3 implements Serializable {
     @Getter
     private String templateCode;
     /**
-     * NOTIFICATION: 通知, PENDING: 待办
+     * 渠道
+     * <p>NOTIFICATION: 通知, PENDING: 待办
      */
     @Getter
-    private String bizActionCategory;
+    private String channel;
 
     public void addResult(MessageSendResultV3 result) {
         receiverPersonId2SendResult.put(result.getReceiverPersonId(), result);
diff --git a/msg-center-common/src/main/java/cn/axzo/msg/center/common/utils/PlaceholderResolver.java b/msg-center-common/src/main/java/cn/axzo/msg/center/common/utils/PlaceholderResolver.java
index 8f5af3c2..65d08013 100644
--- a/msg-center-common/src/main/java/cn/axzo/msg/center/common/utils/PlaceholderResolver.java
+++ b/msg-center-common/src/main/java/cn/axzo/msg/center/common/utils/PlaceholderResolver.java
@@ -2,7 +2,11 @@ package cn.axzo.msg.center.common.utils;
 
 import org.apache.commons.compress.utils.Lists;
 
-import java.util.*;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Set;
 import java.util.function.Function;
 import java.util.stream.Stream;
 
@@ -46,7 +50,10 @@ public class PlaceholderResolver {
     this.placeholderSuffix = placeholderSuffix;
   }
 
-  public static String resolve(String template, Map<String, Object> values) {
+  public static String tryResolve(String template, Map<String, Object> values) {
+    if (values == null || values.isEmpty()) {
+      return template;
+    }
     return getDefaultResolver().resolveByMap(template, values);
   }