diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index bab02c9..00c1dde 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -1348,14 +1348,18 @@ Result huagao_ds::imageInfoGet(const Identity&, ImageInfo& data)
 Result huagao_ds::imageLayoutGet(const Identity&, ImageLayout& data)
 {
 	SANE_Parameters	head = { 0 };
+	int res = 200;
 
 	if (!scanner_.get())
 		return seqError();
 	else if(get_scanned_image_count(-1) == 0)
-		return { ReturnCode::Failure, condition_code_from_hg_error(scanner_->last_error()) };
-
-	int res = 200;
-
+	{
+		// 立思辰扫描程序会先调用该接口才会启动扫描，故需要返回成功。这里默认返回A3尺寸
+		//return { ReturnCode::Failure, condition_code_from_hg_error(scanner_->last_error()) };
+		head.pixels_per_line = 297 / 25.4f * 200;
+		head.lines = 420 / 25.4f * 200;
+	}
+	else
 	scanner_->get_first_image_header(&head, NULL, &res);
 	data.setDocumentNumber(1);
 	data.setFrameNumber(1);