diff --git a/.changeset/flat-plants-joke.md b/.changeset/flat-plants-joke.md
new file mode 100644
index 00000000..a9c282d0
--- /dev/null
+++ b/.changeset/flat-plants-joke.md
@@ -0,0 +1,7 @@
+---
+'@pintora/diagrams': patch
+'@pintora/cli': patch
+'@pintora/standalone': patch
+---
+
+feat: [activity] support quoted word as action message
diff --git a/packages/pintora-diagrams/src/activity/__tests__/activity-parser.spec.js b/packages/pintora-diagrams/src/activity/__tests__/activity-parser.spec.js
index c80150df..930ca3d0 100644
--- a/packages/pintora-diagrams/src/activity/__tests__/activity-parser.spec.js
+++ b/packages/pintora-diagrams/src/activity/__tests__/activity-parser.spec.js
@@ -712,4 +712,14 @@ repeatwhile (data available) is (yes) not (no)
     const ir = db.getDiagramIR()
     expect(ir.title).toEqual('Hello')
   })
+
+  it('can parse quoted word in action', () => {
+    const example = stripStartEmptyLines(`
+  activityDiagram
+    :"for (var i = 0; i <= n; i++)";
+      `)
+    parse(example)
+    const ir = db.getDiagramIR()
+    expect(ir.steps[0].value.message).toEqual('for (var i = 0; i <= n; i++)')
+  })
 })
diff --git a/packages/pintora-diagrams/src/activity/parser/activityDiagram.ne b/packages/pintora-diagrams/src/activity/parser/activityDiagram.ne
index f35d9ab3..370662de 100644
--- a/packages/pintora-diagrams/src/activity/parser/activityDiagram.ne
+++ b/packages/pintora-diagrams/src/activity/parser/activityDiagram.ne
@@ -261,9 +261,16 @@ oneLineAction ->
     %}
 
 multilineText ->
-    (%VALID_TEXT|%WS|%NL):* {%
+    %QUOTED_WORD {%
       function(d) {
-        // console.log('[multiline text]', d)
+        const ele = d[0]
+        return getQuotedWord(ele)
+      }
+    %}
+  | (%VALID_TEXT|%WS|%NL):* {%
+      function(d) {
+        const ele = d[0]
+        // console.log('[multiline text]', ele)
         const v = d[0].map(l => {
           return l.map(o => tv(o))
         }).join('')