diff --git a/dconfig-center/common/helper.hpp b/dconfig-center/common/helper.hpp
index ed6dbed..8b9d8f6 100644
--- a/dconfig-center/common/helper.hpp
+++ b/dconfig-center/common/helper.hpp
@@ -228,6 +228,13 @@ static QVariant stringToQVariant(const QString &s)
     return s;
 }
 
+static bool isValidTextJsonValue(const QString &s)
+{
+    QJsonParseError error;
+    QJsonDocument::fromJson(s.toUtf8(), &error);
+    return error.error == QJsonParseError::NoError;
+}
+
 static QString qvariantToCmd(const QVariant &v)
 {
     auto stringValue = qvariantToStringCompact(v);
diff --git a/dconfig-center/dde-dconfig-editor/mainwindow.cpp b/dconfig-center/dde-dconfig-editor/mainwindow.cpp
index 295a1db..231b278 100644
--- a/dconfig-center/dde-dconfig-editor/mainwindow.cpp
+++ b/dconfig-center/dde-dconfig-editor/mainwindow.cpp
@@ -722,6 +722,10 @@ void KeyContent::setBaseInfo(ConfigGetter *getter, const QString &language)
         auto widget = new DLineEdit(this);
         widget->setEnabled(canWrite);
         connect(widget, &DLineEdit::editingFinished, widget, [this, widget](){
+            if (!isValidTextJsonValue(widget->text())) {
+                qWarning() << "invalid json value" << widget->text();
+                return;
+            }
             widget->clearFocus();
             emit valueChanged(stringToQVariant(widget->text()));
         });
diff --git a/dconfig-center/dde-dconfig-editor/oemdialog.cpp b/dconfig-center/dde-dconfig-editor/oemdialog.cpp
index 01965d2..17c7b7e 100644
--- a/dconfig-center/dde-dconfig-editor/oemdialog.cpp
+++ b/dconfig-center/dde-dconfig-editor/oemdialog.cpp
@@ -392,6 +392,10 @@ QWidget *OEMDialog::getItemWidget(ConfigGetter *getter, DStandardItem *item)
         widget->setText(qvariantToString(v));
         widget->setEnabled(canWrite);
         connect(widget, &DLineEdit::textChanged, widget, [this, item](const QString &text){
+            if (!isValidTextJsonValue(text)) {
+                qWarning() << "invalid json value" << text;
+                return;
+            }
             item->setData(stringToQVariant(text), ValueRole);
             treeItemChanged(item);
         });
diff --git a/dconfig-center/dde-dconfig/main.cpp b/dconfig-center/dde-dconfig/main.cpp
index 8de0774..2e4defa 100644
--- a/dconfig-center/dde-dconfig/main.cpp
+++ b/dconfig-center/dde-dconfig/main.cpp
@@ -292,6 +292,10 @@ int CommandManager::setCommand()
 #endif
                 manager->setValue(key, value.toDouble());
             } else {
+                if (!isValidTextJsonValue(value)) {
+                    outpuSTDError(QString("the value:[%1] is not a valid json text.").arg(value));
+                    return 1;
+                }
                 manager->setValue(key, stringToQVariant(value));
             }
         } else {