diff --git a/app/scanner/mainwindow.cpp b/app/scanner/mainwindow.cpp
index aee7e506..303c171c 100644
--- a/app/scanner/mainwindow.cpp
+++ b/app/scanner/mainwindow.cpp
@@ -904,6 +904,7 @@ void MainWindow::on_new_image(void *img, int statu)
             if (!judgeDiskSpace(Dialog_ClrCache::getCachePath(), false))
             {
                 m_cacheDirNotify = true;
+                on_stopScan();
 
                 QString info = tr("the disk space in the current path is unsufficient, please select a new path or clear the disk space in time.");
                 m_wndStatusBar->setDeviceStatusInfo(info, true);
@@ -911,7 +912,6 @@ void MainWindow::on_new_image(void *img, int statu)
                 HGBase_WriteInfo(HGBASE_INFOTYPE_ERROR, "disk space is unsufficient!");
                 QMessageBox::warning(this, tr("warning"), info);
 
-                on_stopScan();
                 HGBase_DestroyImage(image);
                 return;
             }
@@ -968,6 +968,7 @@ void MainWindow::on_new_image(void *img, int statu)
             if (!judgeDiskSpace(m_aquireIntoSaveParam.m_savePath, false))
             {
                 m_AquirePathNotify = true;
+                on_stopScan();
 
                 QString info = tr("the disk space in the current path is unsufficient, please select a new path or clear the disk space in time.");
                 m_wndStatusBar->setDeviceStatusInfo(info, true);
@@ -975,7 +976,6 @@ void MainWindow::on_new_image(void *img, int statu)
                 HGBase_WriteInfo(HGBASE_INFOTYPE_ERROR, "disk space is unsufficient!");
                 QMessageBox::warning(this, tr("warning"), info);
 
-                on_stopScan();
                 HGBase_DestroyImage(image);
                 return;
             }
@@ -3591,7 +3591,7 @@ bool MainWindow::judgeDiskSpace(QString currentPath, bool showDlg)
 
     qint64 available_size = 0;
     available_size = storage.bytesAvailable()/1024/1024;
-    if(available_size < 294 * 1024)
+    if(available_size < 64)
     {
         if (showDlg)
         {