diff --git a/charming/src/component/legend.rs b/charming/src/component/legend.rs
index 5ab8788..3ef84d0 100644
--- a/charming/src/component/legend.rs
+++ b/charming/src/component/legend.rs
@@ -1,3 +1,5 @@
+use std::collections::HashMap;
+
 use serde::Serialize;
 
 use crate::{
@@ -158,6 +160,9 @@ pub struct Legend {
     #[serde(skip_serializing_if = "Option::is_none")]
     formatter: Option<String>,
 
+    #[serde(skip_serializing_if = "Option::is_none")]
+    selected: Option<HashMap<String, bool>>,
+
     #[serde(skip_serializing_if = "Option::is_none")]
     selected_mode: Option<LegendSelectedMode>,
 
@@ -202,6 +207,7 @@ impl Legend {
             text_style: None,
             symbol_rotate: None,
             formatter: None,
+            selected: None,
             selected_mode: None,
             border_color: None,
             inactive_color: None,
@@ -314,6 +320,14 @@ impl Legend {
         self
     }
 
+    pub fn selected<S: Into<String>, I: IntoIterator<Item = (S, bool)>>(
+        mut self,
+        selected: I,
+    ) -> Self {
+        self.selected = Some(selected.into_iter().map(|(k, v)| (k.into(), v)).collect());
+        self
+    }
+
     pub fn selected_mode<S: Into<LegendSelectedMode>>(mut self, selected_mode: S) -> Self {
         self.selected_mode = Some(selected_mode.into());
         self
diff --git a/gallery/src/line/stacked_line.rs b/gallery/src/line/stacked_line.rs
index d60a6ae..5eb5068 100644
--- a/gallery/src/line/stacked_line.rs
+++ b/gallery/src/line/stacked_line.rs
@@ -9,13 +9,18 @@ pub fn chart() -> Chart {
     Chart::new()
         .title(Title::new().text("Stacked Line"))
         .tooltip(Tooltip::new().trigger(Trigger::Axis))
-        .legend(Legend::new().data(vec![
-            "Email",
-            "Union Ads",
-            "Video Ads",
-            "Direct",
-            "Search Engine",
-        ]))
+        .legend(
+            Legend::new()
+                .data(vec![
+                    "Email",
+                    "Union Ads",
+                    "Video Ads",
+                    "Direct",
+                    "Search Engine",
+                    "Affiliate Marketing",
+                ])
+                .selected([("Affiliate Marketing", false)]),
+        )
         .grid(
             Grid::new()
                 .left("3%")
@@ -61,4 +66,10 @@ pub fn chart() -> Chart {
                 .stack("Total")
                 .data(vec![820, 932, 901, 934, 1290, 1330, 1320]),
         )
+        .series(
+            Line::new()
+                .name("Affiliate Marketing")
+                .stack("Total")
+                .data(vec![180, 232, 210, 290, 250, 400, 370]),
+        )
 }