diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 5e8e5e5774..91b747853e 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -2785,6 +2785,46 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
             this->placeholder_parser().set("scan_first_layer", new ConfigOptionBool(false));
         }
     }
+    {                                                                         // hold chamber temp for flat print: Flag
+        double print_area_sum_threshold = 40000.0, pring_hight_threshold = 0.3; // thresholds in mm^2 and mm as units
+
+        double   area_sum_temp  = 0.0;
+        coordf_t max_hight_temp = -1.0;
+        for (ObjectID print_object_ID_t : print.print_object_ids()) {
+            const PrintObject *print_object = print.get_object(print_object_ID_t);
+            // object hight
+            if (!print_object->layers().empty() && print_object->layers().back()->print_z > max_hight_temp) max_hight_temp = print_object->layers().back()->print_z;
+            // object area
+            if (!print_object->layers().empty() && print_object->layers().front()->print_z < print.config().initial_layer_print_height + EPSILON &&
+                !print_object->layers().front()->lslices.empty()) {
+                ExPolygons temp_Expolys = print_object->layers().front()->lslices;
+                for (ExPolygon &temp_Expoly : temp_Expolys) { area_sum_temp += temp_Expoly.area(); }
+            }
+            // suport area
+            if (!print_object->support_layers().empty() && print_object->support_layers().front()->print_z < print.config().initial_layer_print_height + EPSILON &&
+                !print_object->support_layers().front()->support_islands.empty()) {
+                ExPolygons temp_Expolys = print_object->support_layers().front()->support_islands;
+                for (ExPolygon &temp_Expoly : temp_Expolys) { area_sum_temp += temp_Expoly.area(); }
+            }
+            // brim area
+            if (print.m_brimMap.find(print_object_ID_t) != print.m_brimMap.end() && !print.m_brimMap.at(print_object_ID_t).entities.empty()) { // contain brim
+                for (const ExtrusionEntity *entities_temp : print.m_brimMap.at(print_object_ID_t).entities) {
+                    Polygons temp_Expolys;
+                    entities_temp->polygons_covered_by_spacing(temp_Expolys, 0.0f);
+                    for (Polygon &temp_Expoly : temp_Expolys) { area_sum_temp += temp_Expoly.area(); }
+                }
+            }
+        }
+        // wipe tower area
+        if (has_wipe_tower) {
+            Polygon temp_Expoly = print.wipe_tower_data().wipe_tower_mesh_data->bottom;
+            area_sum_temp += temp_Expoly.area();
+        }
+        bool hold_chamber_temp_for_flat_print = max_hight_temp > 0 && max_hight_temp < pring_hight_threshold && area_sum_temp > print_area_sum_threshold * 1.0e10;
+        this->placeholder_parser().set("hold_chamber_temp_for_flat_print", new ConfigOptionBool(hold_chamber_temp_for_flat_print));
+    }
+
+
     std::string machine_start_gcode = this->placeholder_parser_process("machine_start_gcode", print.config().machine_start_gcode.value, initial_extruder_id);
     if (print.config().gcode_flavor != gcfKlipper) {
         // Set bed temperature if the start G-code does not contain any bed temp control G-codes.