diff --git a/hgdriver/hgdev/hg_scanner_300.cpp b/hgdriver/hgdev/hg_scanner_300.cpp
index 48f7ef5..7b79b7f 100644
--- a/hgdriver/hgdev/hg_scanner_300.cpp
+++ b/hgdriver/hgdev/hg_scanner_300.cpp
@@ -622,7 +622,6 @@ int hg_scanner_300::writedown_device_configuration(bool type,setting_hardware::H
 	}
 	size = papersize.GetPaperSize(TwSS::A4, 200, img_conf_.paperAlign);
 	dsp_config.params_3288.dstHeight = (int)((size.cy + 200) / 100);
-	dsp_config.params_3288.dirty_detect = is_lens_dirty;
 
 	USBCB usbcb = { setting3288dsp::CONFIGURED_DATA, d->value, 0};
 	len = sizeof(USBCB);
@@ -843,6 +842,7 @@ void hg_scanner_300::printf_devconfig(setting_hardware::HGSCANCONF_3288 *d)
 	VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO,"dsp_config.params_3288.reversed1:%d\r\n",d->params_3288.reversed1);
 	VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO,"dsp_config.params_3288.reversed2:%d\r\n",d->params_3288.reversed2);
 	VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO,"dsp_config.params_3288.enableSizeDetect:%d\r\n",d->params_3288.enableSizeDetect);
+	VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO, "dsp_config.params_3288.dirty_detect:%d\r\n", d->params_3288.dirty_detect);
 	VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO,"dsp_config.params_3288.value:%d\r\n",d->value);
 }
 
@@ -1246,6 +1246,7 @@ int hg_scanner_300::on_detect_lens_dirty(bool &type)
 		return SCANNER_ERR_DEVICE_NOT_SUPPORT;
 
 	is_lens_dirty = type;
+	dsp_config.params_3288.dirty_detect = type;
 	return SCANNER_ERR_OK;
 }
 int hg_scanner_300::on_get_feedmode(int &feedmode)