diff --git a/hgdriver/hgdev/hg_scanner.cpp b/hgdriver/hgdev/hg_scanner.cpp
index 1beb463..b70fb75 100644
--- a/hgdriver/hgdev/hg_scanner.cpp
+++ b/hgdriver/hgdev/hg_scanner.cpp
@@ -161,7 +161,7 @@ hg_scanner::hg_scanner(ScannerSerial serial, const char* dev_name, usb_io* io, i
 	, is_auto_paper_scan_exit_time(60), is_read_int(true), is_auto_feedmode_(false)
 	, firmware_sup_wait_paper_(false),firmware_sup_pick_strength_(false),firmware_sup_log_export_(false),firmware_sup_color_corr_(false),firmware_sup_wake_device_(false)
 	, firmware_sup_double_img(false),firmware_sup_devs_lock_(false),firmware_sup_dpi_300(false),firmware_sup_dpi_600(false),firmware_sup_auto_speed_(false),firmware_sup_morr_(false)
-	, firmware_sup_color_fill_(false),firmware_sup_history_cnt(false)
+	, firmware_sup_color_fill_(false),firmware_sup_history_cnt(false), have_max_size(false)
 {
 		#if !defined(_WIN32) && !defined(_WIN64) &&defined(x86_64)
 		isx86_Advan_ = false;
@@ -1366,6 +1366,23 @@ int hg_scanner::set_color_change(void)
 }
 bool hg_scanner::jsn_reorganize()
 {
+	string str;
+	int len = setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").size();
+	int	max_papers[] = { PAPER_MAX_SIZE, PAPER_MAX_SIZE_CLIP, PAPER_TRIGEMINY };
+	for (auto& v : max_papers)
+	{
+		std::string	paper(paper_string(v));
+		for (int i = 0; i < len; i++)
+		{
+			setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").at(i).get_to(str);
+			if (str.compare(paper) == 0)
+			{
+				have_max_size = true;
+				break;
+			}
+		}
+	}
+
 	if (!firmware_sup_wait_paper_ && pid_ == 0x239)
 	{
 		erase_option(SANE_STD_OPT_NAME_WAIT_TO_SCAN);
@@ -1794,6 +1811,10 @@ int hg_scanner::setting_resolution(void* data, long* len)
 
 	VLOG_MINI_3(LOG_LEVEL_DEBUG_INFO, "Change resolution from %d to %d = %s\n", old, *((int*)data), hg_scanner_err_name(ret));
 	//*((int*)data) = resolution_;
+	if (!have_max_size)
+	{
+		return ret;
+	}
 
 #ifdef DYN_JSON_BETWEEN_PAPER_AND_DPI
 	int	max_papers[] = { PAPER_MAX_SIZE, PAPER_MAX_SIZE_CLIP, PAPER_TRIGEMINY };
@@ -2945,6 +2966,7 @@ void hg_scanner::init_settings(const char* json_setting_text)
 		jsn_children_.clear();
 		setting_jsn_ = jsonconfig::load_json_from_text(json_setting_text, &jsn_children_);
 	}
+
 	jsn_reorganize();
 
 	VLOG_MINI_1(LOG_LEVEL_ALL, "Initialize %d settings ...\n", jsn_children_.size() - 1);
@@ -2954,6 +2976,11 @@ void hg_scanner::init_settings(const char* json_setting_text)
 	if (lang_get_cur_code_page() != DEFAULT_CODE_PAGE)
 		on_language_changed();
 	notify_setting_result_ = true;
+
+
+	
+	//setting_jsn_
+
 }
 int hg_scanner::init_settings(int pid)
 {
diff --git a/hgdriver/hgdev/hg_scanner.h b/hgdriver/hgdev/hg_scanner.h
index 47e1e3d..5468705 100644
--- a/hgdriver/hgdev/hg_scanner.h
+++ b/hgdriver/hgdev/hg_scanner.h
@@ -90,6 +90,9 @@ class hg_scanner
     bool                save_sizecheck;
     bool                read_over_with_no_data_;    // 针对第三方调用，在最后一段数据时是否返回“SCANNER_ERR_NO_DATA”
     int                 is_color_type_;//保存最后下发到设备的颜色类型
+    bool                have_max_size; //条目是否存在最大尺寸
+
+
     sane_callback       ui_ev_cb_;
     do_when_born_and_dead<hg_scanner>* scan_life_;