diff --git a/SpineViewer/Dialogs/ExportPngDialog.Designer.cs b/SpineViewer/Dialogs/ExportPngDialog.Designer.cs
index b5aad14..7b2ea88 100644
--- a/SpineViewer/Dialogs/ExportPngDialog.Designer.cs
+++ b/SpineViewer/Dialogs/ExportPngDialog.Designer.cs
@@ -239,6 +239,7 @@
             ShowInTaskbar = false;
             StartPosition = FormStartPosition.CenterScreen;
             Text = "导出PNG序列";
+            Load += ExportPngDialog_Load;
             panel1.ResumeLayout(false);
             panel1.PerformLayout();
             tableLayoutPanel1.ResumeLayout(false);
diff --git a/SpineViewer/Dialogs/ExportPngDialog.cs b/SpineViewer/Dialogs/ExportPngDialog.cs
index 2fbb18c..f5f83d6 100644
--- a/SpineViewer/Dialogs/ExportPngDialog.cs
+++ b/SpineViewer/Dialogs/ExportPngDialog.cs
@@ -21,6 +21,11 @@ namespace SpineViewer.Dialogs
             InitializeComponent();
         }
 
+        private void ExportPngDialog_Load(object sender, EventArgs e)
+        {
+            button_SelectOutputDir_Click(sender, e);
+        }
+
         private void button_SelectOutputDir_Click(object sender, EventArgs e)
         {
             folderBrowserDialog.InitialDirectory = textBox_OutputDir.Text;
diff --git a/SpineViewer/Dialogs/ExportPreviewDialog.Designer.cs b/SpineViewer/Dialogs/ExportPreviewDialog.Designer.cs
index 5f635d9..68d8119 100644
--- a/SpineViewer/Dialogs/ExportPreviewDialog.Designer.cs
+++ b/SpineViewer/Dialogs/ExportPreviewDialog.Designer.cs
@@ -239,6 +239,7 @@
             ShowInTaskbar = false;
             StartPosition = FormStartPosition.CenterScreen;
             Text = "导出预览图";
+            Load += ExportPreviewDialog_Load;
             panel1.ResumeLayout(false);
             panel1.PerformLayout();
             tableLayoutPanel1.ResumeLayout(false);
diff --git a/SpineViewer/Dialogs/ExportPreviewDialog.cs b/SpineViewer/Dialogs/ExportPreviewDialog.cs
index 6b9207b..bf56126 100644
--- a/SpineViewer/Dialogs/ExportPreviewDialog.cs
+++ b/SpineViewer/Dialogs/ExportPreviewDialog.cs
@@ -21,6 +21,11 @@ namespace SpineViewer.Dialogs
             InitializeComponent();
         }
 
+        private void ExportPreviewDialog_Load(object sender, EventArgs e)
+        {
+            button_SelectOutputDir_Click(sender, e);
+        }
+
         private void button_SelectOutputDir_Click(object sender, EventArgs e)
         {
             folderBrowserDialog.InitialDirectory = textBox_OutputDir.Text;