diff --git a/hgdriver/hgdev/hg_scanner_239.cpp b/hgdriver/hgdev/hg_scanner_239.cpp
index c83470e..1ca6c9a 100644
--- a/hgdriver/hgdev/hg_scanner_239.cpp
+++ b/hgdriver/hgdev/hg_scanner_239.cpp
@@ -630,18 +630,14 @@ int  hg_scanner_239::read_one_image_from_usb(SANE_Image_Statu statu)
 							break;
 						}
 						block = size;
-						ret = io_->read_bulk(buff, &block);
+						ret = io_->read_bulk(buff, &block); //可能会出现TIME_OUT 然后只能退出去，下一次再来取
 						
-						if (ret != SCANNER_ERR_OK && ret != SCANNER_ERR_TIMEOUT)
+						if (ret != SCANNER_ERR_OK)
 						{
-							VLOG_MINI_1(LOG_LEVEL_FATAL, "read_one_image_from_usb read_data:%s!!! \n", hg_scanner_err_name(ret));
-							break;
-						}
-						else if (ret == SCANNER_ERR_TIMEOUT && io_->get_timeout() > 3000)
-						{
-							VLOG_MINI_2(LOG_LEVEL_FATAL, "read_one_image_from_usb read_data:%s!!!  ,get_timeout is %d\n", hg_scanner_err_name(ret), io_->get_timeout());
+							VLOG_MINI_3(LOG_LEVEL_FATAL, "read_one_image_from_usb read_data:%s!!!  read data[%d/:%d]\n", hg_scanner_err_name(ret),size, block);
 							break;
 						}
+
 						off += block;
 						r -= block;
 					}
@@ -666,10 +662,6 @@ int  hg_scanner_239::read_one_image_from_usb(SANE_Image_Statu statu)
 			else
 			{
 				VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO, "Read image data from USB err: %s\n", hg_scanner_err_name(ret));
-				stop();
-				string str = STATU_DESC_SCANNER_ERR_DEVICE_GET_IMAGE_ERR;
-				str = str + '-' + STATU_DESC_SCANNER_ERR_DEVICE_STOPPED;
-				notify_ui_working_status(str.c_str(), SANE_EVENT_ERROR, ret);
 			}
 		}
 	}
@@ -691,43 +683,54 @@ int hg_scanner_239::discard_all_images(void)
 	//		ret = io_->read_bulk(&str[0], &block);
 	//	}
 	//}
-
-	char		buf[64];
-	int			size = sizeof(buf);
-	ret = SCANNER_ERR_OK;
-	setting3399::HGEIntInfo* info = (setting3399::HGEIntInfo*)buf;
-	{
-		std::lock_guard<std::mutex>      lock(io_lock_);
-		oto = io_->get_timeout();
-		io_->set_timeout(100);
-		ret = io_->read_interrupt(buf, &size);
-	}
-	while (ret == SCANNER_ERR_OK)
-	{
-		pre_int++;
-		if (info->From == setting3399::IMG)
-		{
-			while (get_image_count() > 0)
-			{
-				pop_first_image();
-				pre_img++;
-			}
-		}
-
-		size = sizeof(buf);
 		{
 			std::lock_guard<std::mutex>      lock(io_lock_);
-			ret = io_->read_interrupt(buf, &size);
+
+
+			char		buf[64];
+			int			size = sizeof(buf);
+			ret = SCANNER_ERR_OK;
+			setting3399::HGEIntInfo* info = (setting3399::HGEIntInfo*)buf;
+			{
+
+				if (!io_)
+				{
+					return 0;
+				}
+				oto = io_->get_timeout();
+				io_->set_timeout(100);
+				ret = io_->read_interrupt(buf, &size);
+			}
+			while (ret == SCANNER_ERR_OK)
+			{
+				pre_int++;
+				if (info->From == setting3399::IMG)
+				{
+					while (get_image_count() > 0)
+					{
+						pop_first_image();
+						pre_img++;
+					}
+				}
+
+				size = sizeof(buf);
+				{
+					ret = io_->read_interrupt(buf, &size);
+				}
+			}
+			{
+				io_->set_timeout(oto);
+			}
+		}
+		std::this_thread::sleep_for(std::chrono::milliseconds(1000));
+		if (!io_)
+		{
+			return 0;
+		}
+		if (is_read_int)
+		{
+			init_version();
 		}
-	}
-	{
-		std::lock_guard<std::mutex>      lock(io_lock_);
-		io_->set_timeout(oto);
-	}
-	if (is_read_int)
-	{
-		init_version();
-	}
 	
 	if (pre_int)
 		VLOG_MINI_2(LOG_LEVEL_DEBUG_INFO, "prev-connection has left %d interrupt packet(s) && %d image(s).\n", pre_int, pre_img);