diff --git a/hgdriver/hgdev/hg_scanner.cpp b/hgdriver/hgdev/hg_scanner.cpp
index b0ea78b..f77ce95 100644
--- a/hgdriver/hgdev/hg_scanner.cpp
+++ b/hgdriver/hgdev/hg_scanner.cpp
@@ -3120,7 +3120,7 @@ int hg_scanner::set_setting_value(const char* name, void* data, long* len)
 }
 int hg_scanner::on_scanner_closing(bool force)
 {
-	return SCANNER_ERR_DEVICE_NOT_SUPPORT;
+	return SCANNER_ERR_OK;
 }
 
 void hg_scanner::thread_handle_usb_read(void)
diff --git a/hgdriver/wrapper/huagaoxxx_warraper_ex.cpp b/hgdriver/wrapper/huagaoxxx_warraper_ex.cpp
index 9f1e45e..357dc52 100644
--- a/hgdriver/wrapper/huagaoxxx_warraper_ex.cpp
+++ b/hgdriver/wrapper/huagaoxxx_warraper_ex.cpp
@@ -13,6 +13,7 @@
 #include <string.h>
 #endif
 #include <math.h>
+#include <exception>
 
 
 #define MAKE_VERSION(a, b, c, d)	\
@@ -138,7 +139,26 @@ extern "C"
 
 	scanner_err hg_scanner_open(scanner_handle* h, const char* name, bool shared, const char* user, const char* pwd, const char* check, char* rsc)
 	{
-		return hg_scanner_mgr::instance()->hg_scanner_open(h, name, shared, user, pwd, check, rsc);
+		try
+		{
+			return hg_scanner_mgr::instance()->hg_scanner_open(h, name, shared, user, pwd, check, rsc);
+		}
+		catch (std::exception& e)
+		{
+			if (h)
+				*h = nullptr;
+			VLOG_MINI_2(LOG_LEVEL_FATAL, "Exception occurs when open '%s': %s.\n", name, e.what());
+
+			return SCANNER_ERR_DATA_DAMAGED;
+		}
+		catch (...)
+		{
+			if (h)
+				*h = nullptr;
+			VLOG_MINI_1(LOG_LEVEL_FATAL, "Exception occurs when open '%s'!\n", name);
+
+			return SCANNER_ERR_DATA_DAMAGED;
+		}
 	}
 
 	scanner_err hg_scanner_close(scanner_handle h, bool force)