diff --git a/a1_swap_mod_packer/gcode.py b/a1_swap_mod_packer/gcode.py
index bd13c23..b435ae6 100644
--- a/a1_swap_mod_packer/gcode.py
+++ b/a1_swap_mod_packer/gcode.py
@@ -120,7 +120,7 @@ def format_duration(seconds: float | None) -> str:
         格式化后的时间字符串，如 "2h 30m"、"5m 20s"、"45s"，未知则返回 "未知"。
     """
     if seconds is None:
-        return "未知"
+        return "0s"
     total = max(0, int(round(seconds)))
     hours, rem = divmod(total, 3600)
     minutes, secs = divmod(rem, 60)
@@ -142,7 +142,7 @@ def format_filament(weight_grams: float | None, used_m: float | None = None) ->
         格式化后的耗材信息字符串，未知则返回 "未知"。
     """
     if weight_grams is None and used_m is None:
-        return "未知"
+        return "0.00 g"
     parts: list[str] = []
     if weight_grams is not None:
         parts.append(f"{weight_grams:.2f} g")
diff --git a/a1_swap_mod_packer/gui.py b/a1_swap_mod_packer/gui.py
index 071a313..67cfdde 100644
--- a/a1_swap_mod_packer/gui.py
+++ b/a1_swap_mod_packer/gui.py
@@ -423,7 +423,7 @@ class MainWindow(QMainWindow):
         table_layout.addWidget(self.table)
 
         # --- 合计统计标签 ---
-        self.total_summary_label = QLabel("合计：0 板 | 时间：未知 | 耗材：未知")
+        self.total_summary_label = QLabel("合计：0 板 | 时间：0s | 耗材：0.00 g")
         table_layout.addWidget(self.total_summary_label)
         file_body.addLayout(table_layout, 1)