diff --git a/en/option/series/sunburst.md b/en/option/series/sunburst.md
index 4eda6509..2e1df031 100644
--- a/en/option/series/sunburst.md
+++ b/en/option/series/sunburst.md
@@ -271,6 +271,12 @@ function(nodeA, nodeB) {
 
 If there is no `name`, whether need to render it.
 
+## startAngle(number) = 90
+
+<ExampleUIControlAngle step="1" min="0" max="360" default="90" />
+
+The start angle, which range is [0, 360].
+
 {{ use: partial-sunburst-label-props(
     prefix = "#",
     state = 'normal'
diff --git a/zh/option/series/sunburst.md b/zh/option/series/sunburst.md
index b0064d09..21ef756c 100644
--- a/zh/option/series/sunburst.md
+++ b/zh/option/series/sunburst.md
@@ -420,6 +420,12 @@ function(nodeA, nodeB) {
 
 如果数据没有 `name`，是否需要渲染文字。
 
+## startAngle(number) = 90
+
+<ExampleUIControlAngle step="1" min="0" max="360" default="90" />
+
+起始角度，支持范围[0, 360]。
+
 {{ use: partial-sunburst-label-props(
     prefix = "#",
     state = 'normal'