diff --git a/src/qelmt/line.rs b/src/qelmt/line.rs
index 936a237..9f02082 100644
--- a/src/qelmt/line.rs
+++ b/src/qelmt/line.rs
@@ -99,22 +99,6 @@ impl Line {
         })
     }
 
-     pub fn update_line_weight(&mut self, lw: i16) {
-        let weight_str = match lw {
-            0 | -1 => "thin",
-            13..=25 => "thin",
-            26..=70 => "normal",
-            71..=100 => "thick",
-            _ => "extra-thick",
-        };
-
-        // 直接追加，不做复杂替换（简单有效）
-        if !self.style.is_empty() {
-            self.style.push_str("; ");
-        }
-        self.style.push_str(&format!("line-weight: {}", weight_str));
-    }
-
 
 }
 
diff --git a/src/qelmt/mod.rs b/src/qelmt/mod.rs
index 7654aa3..ab19b02 100644
--- a/src/qelmt/mod.rs
+++ b/src/qelmt/mod.rs
@@ -828,7 +828,6 @@ impl<'a> ObjectsBuilder<'a> {
                     if let Ok(mut ellipse) = Ellipse::try_from(polyline) {
                         // 根据line_type_name更新线型样式
                         ellipse.update_line_style(&update_line_style);
-                        // TODO ellipse的粗体未实现
                         ellipse.scale(self.scale_fact.x, self.scale_fact.y);
 
                         ellipse.x += self.offset.x;
@@ -840,7 +839,6 @@ impl<'a> ObjectsBuilder<'a> {
 
                         // 根据line_type_name更新线型样式
                         poly.update_line_style(&update_line_style);
-                        // TODO poly的粗体未实现
                         poly.scale(self.scale_fact.x, self.scale_fact.y);
 
                         for cord in &mut poly.coordinates {
@@ -901,10 +899,6 @@ impl<'a> ObjectsBuilder<'a> {
 
                         // 根据line_type_name更新线型样式
                         line.update_line_style(&update_line_style);
-                        // 更新线条粗细
-                        if let Some(w) = lw {
-                            line.update_line_weight(w);
-                        }
                         line.scale(self.scale_fact.x, self.scale_fact.y);
 
                         line.x1 += self.offset.x;
@@ -919,7 +913,6 @@ impl<'a> ObjectsBuilder<'a> {
                         if let Ok(mut ellipse) = Ellipse::try_from_lwpolyline_with_color(lwpolyline, color) {
                             // 根据line_type_name更新线型样式
                             ellipse.update_line_style(&update_line_style);
-                            // TODO ellipse的粗体未实现
                             ellipse.scale(self.scale_fact.x, self.scale_fact.y);
 
                             ellipse.x += self.offset.x;
@@ -954,7 +947,6 @@ impl<'a> ObjectsBuilder<'a> {
 
                                 // 根据line_type_name更新线型样式
                                 poly.update_line_style(&update_line_style);
-                                // TODO poly的粗体未实现
                                 poly.scale(self.scale_fact.x, self.scale_fact.y);
 
                                 for cord in &mut poly.coordinates {
diff --git a/src/qelmt/polygon.rs b/src/qelmt/polygon.rs
index 79f1619..2ececcc 100644
--- a/src/qelmt/polygon.rs
+++ b/src/qelmt/polygon.rs
@@ -107,24 +107,6 @@ impl Polygon {
             },
         }
     }
-
-     pub fn update_line_weight(&mut self, lw: i16) {
-        let weight_str = match lw {
-            0 | -1 => "thin",
-            13..=25 => "thin",
-            26..=70 => "normal",
-            71..=100 => "thick",
-            _ => "extra-thick",
-        };
-
-        // 直接追加，不做复杂替换（简单有效）
-        if !self.style.is_empty() {
-            self.style.push_str("; ");
-        }
-        self.style.push_str(&format!("line-weight: {}", weight_str));
-    }
-
-
 }
 
 impl From<(&Spline, u32)> for Polygon {