diff --git a/src/libslic3r/PerimeterGenerator.cpp b/src/libslic3r/PerimeterGenerator.cpp
index d59148ad51..cb37471e45 100644
--- a/src/libslic3r/PerimeterGenerator.cpp
+++ b/src/libslic3r/PerimeterGenerator.cpp
@@ -959,6 +959,17 @@ void PerimeterGenerator::process_classic()
                  this->object_config->brim_type == BrimType::btOuterOnly &&
                  this->object_config->brim_width.value > 0))
                 entities.reverse();
+            //BBS. adjust wall generate seq
+            else if (this->print_config->wall_infill_order == WallInfillOrder::InnerOuterInnerInfill)
+                if (entities.entities.size() > 1){
+                    int              last_outer=0;
+                    int              outer = 0;
+                    for (; outer < entities.entities.size(); ++outer)
+                        if (entities.entities[outer]->role() == erExternalPerimeter && outer - last_outer > 1) {
+                            std::swap(entities.entities[outer], entities.entities[outer - 1]);
+                            last_outer = outer;
+                        }
+                }
             // append perimeters for this slice as a collection
             if (! entities.empty())
                 this->loops->append(entities);
@@ -1279,6 +1290,17 @@ void PerimeterGenerator::process_arachne()
                 }
             }
         }
+        // BBS. adjust wall generate seq
+        if (this->print_config->wall_infill_order == WallInfillOrder::InnerOuterInnerInfill)
+            if (ordered_extrusions.size() > 1) {
+                int last_outer = 0;
+                int outer      = 0;
+                for (; outer < ordered_extrusions.size(); ++outer)
+                    if (ordered_extrusions[outer].extrusion->inset_idx == 0 && outer - last_outer > 1) {
+                        std::swap(ordered_extrusions[outer], ordered_extrusions[outer - 1]);
+                        last_outer = outer;
+                    }
+            }
 
         if (ExtrusionEntityCollection extrusion_coll = traverse_extrusions(*this, ordered_extrusions); !extrusion_coll.empty())
             this->loops->append(extrusion_coll);
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 99d8377263..1315e2c1e9 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -148,7 +148,8 @@ static t_config_enum_values s_keys_map_WallInfillOrder {
     { "inner wall/outer wall/infill",     int(WallInfillOrder::InnerOuterInfill) },
     { "outer wall/inner wall/infill",     int(WallInfillOrder::OuterInnerInfill) },
     { "infill/inner wall/outer wall",     int(WallInfillOrder::InfillInnerOuter) },
-    { "infill/outer wall/inner wall",     int(WallInfillOrder::InfillOuterInner) }
+    { "infill/outer wall/inner wall",     int(WallInfillOrder::InfillOuterInner) },
+    { "inner-outer-inner wall/infill",     int(WallInfillOrder::InnerOuterInnerInfill)}
 };
 CONFIG_OPTION_ENUM_DEFINE_STATIC_MAPS(WallInfillOrder)
 
@@ -1015,10 +1016,12 @@ void PrintConfigDef::init_fff_params()
     def->enum_values.push_back("outer wall/inner wall/infill");
     def->enum_values.push_back("infill/inner wall/outer wall");
     def->enum_values.push_back("infill/outer wall/inner wall");
+    def->enum_values.push_back("inner-outer-inner wall/infill");
     def->enum_labels.push_back(L("inner/outer/infill"));
     def->enum_labels.push_back(L("outer/inner/infill"));
     def->enum_labels.push_back(L("infill/inner/outer"));
     def->enum_labels.push_back(L("infill/outer/inner"));
+    def->enum_labels.push_back(L("inner-outer-inner/infill"));
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionEnum<WallInfillOrder>(WallInfillOrder::InnerOuterInfill));
 
diff --git a/src/libslic3r/PrintConfig.hpp b/src/libslic3r/PrintConfig.hpp
index 837b3cf94f..1565b25532 100644
--- a/src/libslic3r/PrintConfig.hpp
+++ b/src/libslic3r/PrintConfig.hpp
@@ -71,6 +71,7 @@ enum class WallInfillOrder {
     OuterInnerInfill,
     InfillInnerOuter,
     InfillOuterInner,
+    InnerOuterInnerInfill,
     Count,
 };
 //BBS