diff --git a/epmet-module/gov-voice/gov-voice-server/src/main/resources/mapper/ArticleDao.xml b/epmet-module/gov-voice/gov-voice-server/src/main/resources/mapper/ArticleDao.xml
index 94f7798cf8..875773b8c9 100644
--- a/epmet-module/gov-voice/gov-voice-server/src/main/resources/mapper/ArticleDao.xml
+++ b/epmet-module/gov-voice/gov-voice-server/src/main/resources/mapper/ArticleDao.xml
@@ -25,8 +25,8 @@
     <select id="queryGovArticleContent" parameterType="java.lang.String" resultType="com.epmet.dto.result.GovArticleContentDTO">
         SELECT
             ac.CONTENT_TYPE,
-            IFNULL(ac.CONTENT,''),
-            IFNULL(ac.FILE_NAME,'')
+            ac.CONTENT,
+            ac.FILE_NAME
         FROM
             article_content ac
         WHERE
@@ -298,9 +298,9 @@
         art.PUBLISHER_NAME AS publishUnitDesc,
         art.PUBLISH_DATE AS publishDate,
         IFNULL(art.TAGS,'') AS tags,
-        IFNULL(content2.CONTENT,''),
+        content2.CONTENT,
         content2.CONTENT_TYPE,
-        IFNULL(content2.FILE_NAME,''),
+        content2.FILE_NAME,
         (SELECT COUNT(1) FROM ARTICLE_VISIT_RECORD WHERE DEL_FLAG = '0' AND ARTICLE_ID = #{articleId} AND GRID_ID = #{gridId}) AS visitRecordCount,
         art.CUSTOMER_ID
         FROM
@@ -308,9 +308,9 @@
         LEFT JOIN (
         SELECT
         content.ARTICLE_ID,
-        IFNULL(content.CONTENT,''),
+        content.CONTENT,
         content.CONTENT_TYPE,
-        IFNULL(content.FILE_NAME,''),
+        content.FILE_NAME,
         content.ORDER_NUM
         FROM
         ARTICLE_CONTENT content
diff --git a/epmet-module/gov-voice/gov-voice-server/src/main/resources/mapper/DraftDao.xml b/epmet-module/gov-voice/gov-voice-server/src/main/resources/mapper/DraftDao.xml
index bad753cd78..cfe5e6c14b 100644
--- a/epmet-module/gov-voice/gov-voice-server/src/main/resources/mapper/DraftDao.xml
+++ b/epmet-module/gov-voice/gov-voice-server/src/main/resources/mapper/DraftDao.xml
@@ -26,9 +26,9 @@
     <select id="selectDraftContentDetail" parameterType="java.lang.String" resultType="com.epmet.dto.result.DraftContentDetailDTO">
         SELECT
         dc.ID,
-        IFNULL(dc.CONTENT,''),
+        dc.CONTENT,
         dc.CONTENT_TYPE,
-        IFNULL(dc.FILE_NAME,''),
+        dc.FILE_NAME,
         dc.ORDER_NUM,
         (case
         when dc.AUDIT_STATUS is null then ""