diff --git a/resources/profiles/BBL/process/fdm_process_bbl_common.json b/resources/profiles/BBL/process/fdm_process_bbl_common.json
index a14a39b4a..de57538c2 100644
--- a/resources/profiles/BBL/process/fdm_process_bbl_common.json
+++ b/resources/profiles/BBL/process/fdm_process_bbl_common.json
@@ -24,6 +24,7 @@
     "enable_arc_fitting": "1",
     "outer_wall_line_width": "0.42",
     "outer_wall_speed": "120",
+    "outer_wall_acceleration": "10000",
     "wall_infill_order": "inner wall/outer wall/infill",
     "line_width": "0.42",
     "infill_direction": "45",
diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index cfc185e46..23f688ba0 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1465,9 +1465,10 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
     // Emit machine envelope limits for the Marlin firmware.
     this->print_machine_envelope(file, print);
 
-    //BBS: emit printing accelerate if has non-zero value
+    //BBS: emit outer wall accelerate if has non-zero value
     if (m_config.default_acceleration.value > 0) {
-        float acceleration = m_config.default_acceleration.value;
+        float acceleration = m_config.outer_wall_acceleration.value > 0 ?
+                             m_config.outer_wall_acceleration.value : m_config.default_acceleration.value;
         file.write(m_writer.set_acceleration((unsigned int)floor(acceleration + 0.5)));
     }
 
@@ -3538,9 +3539,12 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
             acceleration = m_config.first_layer_acceleration_over_raft.value;
         } else if (m_config.bridge_acceleration.value > 0 && is_bridge(path.role())) {
             acceleration = m_config.bridge_acceleration.value;
-        } else if (m_config.perimeter_acceleration.value > 0 && is_perimeter(path.role())) {
-            acceleration = m_config.perimeter_acceleration.value;
 #endif
+        } else if (m_config.outer_wall_acceleration.value > 0
+            //BBS: FIXME, in fact,we only need to set acceleration for outer wall. But we don't know
+            //whether the overhang perimeter is outer or not. So using specific acceleration together.
+            && (path.role() == erExternalPerimeter || path.role() == erOverhangPerimeter)) {
+            acceleration = m_config.outer_wall_acceleration.value;
         } else if (m_config.top_surface_acceleration.value > 0 && is_top_surface(path.role())) {
             acceleration = m_config.top_surface_acceleration.value;
         } else {
diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index 1d6ceed4f..8e2202cc4 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -705,7 +705,7 @@ static std::vector<std::string> s_Preset_print_options {
     "inner_wall_speed", "outer_wall_speed", "sparse_infill_speed", "internal_solid_infill_speed",
     "top_surface_speed", "support_speed", "support_object_xy_distance", "support_interface_speed",
     "bridge_speed", "gap_infill_speed", "travel_speed", "travel_speed_z", "initial_layer_speed",
-    "initial_layer_acceleration", "top_surface_acceleration", "default_acceleration", "skirt_loops", "skirt_distance", "skirt_height", "draft_shield",
+    "outer_wall_acceleration", "initial_layer_acceleration", "top_surface_acceleration", "default_acceleration", "skirt_loops", "skirt_distance", "skirt_height", "draft_shield",
     "brim_width", "brim_object_gap", "brim_type", "enable_support", "support_type", "support_threshold_angle", "enforce_support_layers",
     "raft_layers", "raft_first_layer_density", "raft_first_layer_expansion", "raft_contact_distance", "raft_expansion",
     "support_base_pattern", "support_base_pattern_spacing", "support_style",
diff --git a/src/libslic3r/Print.cpp b/src/libslic3r/Print.cpp
index ef5761ecb..3b67a9e38 100644
--- a/src/libslic3r/Print.cpp
+++ b/src/libslic3r/Print.cpp
@@ -92,6 +92,7 @@ bool Print::invalidate_state_by_config_options(const ConfigOptionResolver & /* n
         "filament_density",
         "filament_cost",
         "initial_layer_acceleration",
+        "outer_wall_acceleration",
         "top_surface_acceleration",
         // BBS
         "cool_plate_temp_initial_layer",
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index c431206a4..d924d4986 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -1255,6 +1255,14 @@ void PrintConfigDef::init_fff_params()
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionFloat(500));
 
+    def = this->add("outer_wall_acceleration", coFloat);
+    def->label = L("Outer wall");
+    def->tooltip = L("Acceleration of outer wall. Using a lower value can improve quality");
+    def->sidetext = L("mm/s²");
+    def->min = 0;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloat(500));
+
     def = this->add("initial_layer_acceleration", coFloat);
     def->label = L("Initial layer");
     def->tooltip = L("Acceleration of initial layer. Using a lower value can improve build plate adhensive");
@@ -3997,7 +4005,7 @@ std::string validate(const FullPrintConfig &cfg)
     // config before exporting, leaving this check in would mean that config would be rejected before export
     // (although both the UI and the backend handle it).
     // --default-acceleration
-    //if ((cfg.perimeter_acceleration != 0. || cfg.infill_acceleration != 0. || cfg.bridge_acceleration != 0. || cfg.initial_layer_acceleration != 0.) &&
+    //if ((cfg.outer_wall_acceleration != 0. || cfg.infill_acceleration != 0. || cfg.bridge_acceleration != 0. || cfg.initial_layer_acceleration != 0.) &&
     //    cfg.default_acceleration == 0.)
     //    return "Invalid zero value for --default-acceleration when using other acceleration settings";
 
diff --git a/src/libslic3r/PrintConfig.hpp b/src/libslic3r/PrintConfig.hpp
index ae6852807..09a759ba3 100644
--- a/src/libslic3r/PrintConfig.hpp
+++ b/src/libslic3r/PrintConfig.hpp
@@ -833,6 +833,7 @@ PRINT_CONFIG_CLASS_DERIVED_DEFINE(
     ((ConfigOptionInts,               fan_cooling_layer_time))
     ((ConfigOptionStrings,            filament_colour))
     ((ConfigOptionFloat,              top_surface_acceleration))
+    ((ConfigOptionFloat,              outer_wall_acceleration))
     ((ConfigOptionFloat,              initial_layer_acceleration))
     ((ConfigOptionFloat,              initial_layer_line_width))
     ((ConfigOptionFloat,              initial_layer_print_height))
diff --git a/src/slic3r/GUI/ConfigManipulation.cpp b/src/slic3r/GUI/ConfigManipulation.cpp
index 992bbf166..bb5412a98 100644
--- a/src/slic3r/GUI/ConfigManipulation.cpp
+++ b/src/slic3r/GUI/ConfigManipulation.cpp
@@ -503,7 +503,7 @@ void ConfigManipulation::toggle_print_fff_options(DynamicPrintConfig *config, co
 
     bool have_default_acceleration = config->opt_float("default_acceleration") > 0;
     //BBS
-    for (auto el : { "initial_layer_acceleration", "top_surface_acceleration" })
+    for (auto el : { "initial_layer_acceleration", "outer_wall_acceleration", "top_surface_acceleration" })
         toggle_field(el, have_default_acceleration);
 
     bool have_skirt = config->opt_int("skirt_loops") > 0;
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 0147cedcf..ec107ae8a 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -1837,6 +1837,7 @@ void TabPrint::build()
 
         optgroup = page->new_optgroup(L("Acceleration"), L"param_acceleration", 15);
         optgroup->append_single_option_line("initial_layer_acceleration");
+        optgroup->append_single_option_line("outer_wall_acceleration");
         optgroup->append_single_option_line("top_surface_acceleration");
         optgroup->append_single_option_line("default_acceleration");