diff --git a/backup-daemon/customizedatabackupproxy.cpp b/backup-daemon/customizedatabackupproxy.cpp
index 19d7d77..0b8201f 100755
--- a/backup-daemon/customizedatabackupproxy.cpp
+++ b/backup-daemon/customizedatabackupproxy.cpp
@@ -60,6 +60,24 @@ bool CustomizeDataBackupProxy::checkEnvEx()
         Utils::mkpath(m_backupWrapper.m_prefixDestPath);
     }
 
+    // 因为有可能是选择的移动设备，故进行校验移动设备情况：空间大小、文件格式、挂载模式等
+    QString backupPath(m_backupWrapper.m_prefixDestPath);
+    backupPath.replace("//", "/");
+    QStorageInfo udisk(backupPath);
+    QString udisk_type = udisk.fileSystemType();
+    qDebug() << "udisk's filesystemtype is " << udisk_type;
+    if (udisk_type == "vfat") {
+        qCritical() << m_backupWrapper.m_prefixDestPath + " udisk's filesystemtype is vfat";
+        emit checkResult(int(BackupResult::UDISK_FILESYSTEM_TYPE_IS_VFAT));
+        return false;
+    }
+    if (udisk.isReadOnly()) {
+        // 只读挂载的U盘
+        qCritical() << QString("udisk(%s) is readonly filesystem").arg(m_backupWrapper.m_prefixDestPath);
+        emit checkResult(int(BackupResult::UDISK_FILESYSTEM_IS_READONLY));
+        return false;
+    }
+
     // 2、判断备份是否增量备份
     isIncBackup();
 
diff --git a/backup-daemon/customizesystembackupproxy.cpp b/backup-daemon/customizesystembackupproxy.cpp
index e2b69de..6f6ee97 100755
--- a/backup-daemon/customizesystembackupproxy.cpp
+++ b/backup-daemon/customizesystembackupproxy.cpp
@@ -65,6 +65,25 @@ bool CustomizeSystemBackupProxy::checkEnvEx()
         qCritical() << QString("dstDir %s is not exist!").arg(m_backupWrapper.m_prefixDestPath);
         Utils::mkpath(m_backupWrapper.m_prefixDestPath);
     }
+
+    // 因为有可能是选择的移动设备，故进行校验移动设备情况：空间大小、文件格式、挂载模式等
+    QString backupPath(m_backupWrapper.m_prefixDestPath);
+    backupPath.replace("//", "/");
+    QStorageInfo udisk(backupPath);
+    QString udisk_type = udisk.fileSystemType();
+    qDebug() << "udisk's filesystemtype is " << udisk_type;
+    if (udisk_type == "vfat") {
+        qCritical() << m_backupWrapper.m_prefixDestPath + " udisk's filesystemtype is vfat";
+        emit checkResult(int(BackupResult::UDISK_FILESYSTEM_TYPE_IS_VFAT));
+        return false;
+    }
+    if (udisk.isReadOnly()) {
+        // 只读挂载的U盘
+        qCritical() << QString("udisk(%s) is readonly filesystem").arg(m_backupWrapper.m_prefixDestPath);
+        emit checkResult(int(BackupResult::UDISK_FILESYSTEM_IS_READONLY));
+        return false;
+    }
+
     // 2、计算备份大小
     calcSizeForBackup();
 
diff --git a/kybackup/module/databackup.cpp b/kybackup/module/databackup.cpp
index 6b14912..11909db 100755
--- a/kybackup/module/databackup.cpp
+++ b/kybackup/module/databackup.cpp
@@ -480,16 +480,21 @@ void DataBackup::initSecondWidget()
         if (fileDialog.exec() == QDialog::Accepted) {
             QStringList selectFiles = fileDialog.selectedFiles();
             if (!selectFiles.isEmpty()) {
-                comboSelect->setCurrentIndex(-1);
                 QString fileName = selectFiles.at(0);
-                this->m_customizePath = fileName;
+                if (this->m_udiskPaths.contains(fileName)) {
+                    comboSelect->setCurrentIndex(this->m_udiskPaths.indexOf(fileName));
+                    this->m_customizePath = "";
+                } else {
+                    comboSelect->setCurrentIndex(-1);
+                    this->m_customizePath = fileName;
 
-                QLineEdit * edit = new QLineEdit;
-                comboSelect->setLineEdit(edit);
-                edit->setText(tr("customize path : ") + fileName + BACKUP_SNAPSHOTS_PATH);
-                edit->setReadOnly(true);
-                if (listWidget->getBackupPaths().size() > 0)
-                    nextStep->setEnabled(true);
+                    QLineEdit * edit = new QLineEdit;
+                    comboSelect->setLineEdit(edit);
+                    edit->setText(tr("customize path : ") + fileName + BACKUP_SNAPSHOTS_PATH);
+                    edit->setReadOnly(true);
+                    if (listWidget->getBackupPaths().size() > 0)
+                        nextStep->setEnabled(true);
+                }
             }
         }
     });
diff --git a/kybackup/module/systembackup.cpp b/kybackup/module/systembackup.cpp
index aa17b7f..9c123b4 100755
--- a/kybackup/module/systembackup.cpp
+++ b/kybackup/module/systembackup.cpp
@@ -336,15 +336,20 @@ void SystemBackup::initSecondWidget()
         if (fileDialog.exec() == QDialog::Accepted) {
             QStringList selectFiles = fileDialog.selectedFiles();
             if (!selectFiles.isEmpty()) {
-                comboSelect->setCurrentIndex(-1);
                 QString fileName = selectFiles.at(0);
-                this->m_customizePath = fileName;
+                if (this->m_udiskPaths.contains(fileName)) {
+                    comboSelect->setCurrentIndex(this->m_udiskPaths.indexOf(fileName));
+                    this->m_customizePath = "";
+                } else {
+                    comboSelect->setCurrentIndex(-1);
+                    this->m_customizePath = fileName;
 
-                QLineEdit * edit = new QLineEdit;
-                comboSelect->setLineEdit(edit);
-                edit->setText(tr("customize path : ") + fileName + BACKUP_SNAPSHOTS_PATH);
-                edit->setReadOnly(true);
-                nextStep->setEnabled(true);
+                    QLineEdit * edit = new QLineEdit;
+                    comboSelect->setLineEdit(edit);
+                    edit->setText(tr("customize path : ") + fileName + BACKUP_SNAPSHOTS_PATH);
+                    edit->setReadOnly(true);
+                    nextStep->setEnabled(true);
+                }
             }
         }
     });