diff --git a/src/main/java/com/xydl/cac/util/IcdXmlUtil.java b/src/main/java/com/xydl/cac/util/IcdXmlUtil.java
index 5da9067..b9d0f1a 100644
--- a/src/main/java/com/xydl/cac/util/IcdXmlUtil.java
+++ b/src/main/java/com/xydl/cac/util/IcdXmlUtil.java
@@ -31,7 +31,7 @@ public class IcdXmlUtil {
         return icdFile;
     }
 
-    private static void processTypeRoot(JsonNode root, IcdFile icdFile) {
+    private static void processTypeRoot(JsonNode root, IcdFile icdFile) throws BusinessException {
         LinkedHashMap<String, IcdConfigType> configMap = new LinkedHashMap<>();
 
         Map<String, JsonNode> mapLNodeType = buildLNodeTypeMap(root);
@@ -77,7 +77,7 @@ public class IcdXmlUtil {
     }
 
     private static void processIEDNode(LinkedHashMap<String, IcdConfigType> configMap, JsonNode iedNode,
-                                       Map<String, JsonNode> mapLNodeType, Map<String, JsonNode> mapDOType, Map<String, JsonNode> mapDAType) {
+                                       Map<String, JsonNode> mapLNodeType, Map<String, JsonNode> mapDOType, Map<String, JsonNode> mapDAType) throws BusinessException {
         String iedName = iedNode.get("name").asText();
 
         List<JsonNode> devList = findNodes(iedNode, "LDevice");
@@ -88,7 +88,7 @@ public class IcdXmlUtil {
     }
 
     private static void processTypeDeviceNode(LinkedHashMap<String, IcdConfigType> configMap, String iedName, JsonNode deviceNode,
-                                              Map<String, JsonNode> mapLNodeType, Map<String, JsonNode> mapDOType, Map<String, JsonNode> mapDAType) {
+                                              Map<String, JsonNode> mapLNodeType, Map<String, JsonNode> mapDOType, Map<String, JsonNode> mapDAType) throws BusinessException {
         String ldeviceInst = deviceNode.get("inst").asText();
         Map<String, JsonNode> mapLN = buildLNMap(deviceNode);
 
@@ -115,6 +115,9 @@ public class IcdXmlUtil {
             }
             JsonNode nodeLNodeType = mapLNodeType.get(lnType);
             JsonNode nodeDO = findLNodeType_DO_Node(nodeLNodeType, doName);
+            if (nodeDO == null) {
+                throw new BusinessException(lnType + "该LNodeType节点下缺少名字为" + doName + "的DO节点");
+            }
             String doType = nodeDO.get("type").asText();
             JsonNode nodeDoDesc = nodeDO.get("desc");
             String doDesc = null;