diff --git a/packages/parser/src/core.ts b/packages/parser/src/core.ts
index e57c6982ed..a76d6a1d3e 100644
--- a/packages/parser/src/core.ts
+++ b/packages/parser/src/core.ts
@@ -68,12 +68,16 @@ export function parseSlide(raw: string): SlideInfoBase {
   const result = matter(raw)
   let note: string | undefined
   const frontmatter = result.data || {}
-  const content = result.content
-    .trim()
-    .replace(/<!--([\s\S]*)-->$/g, (_, v = '') => {
-      note = v.trim()
-      return ''
-    })
+  let content = result.content.trim()
+
+  const comments = Array.from(content.matchAll(/<!--([\s\S]*?)-->/g))
+  if (comments.length) {
+    const last = comments[comments.length - 1]
+    if (last.index && last.index + last[0].length >= content.length) {
+      note = last[1].trim()
+      content = content.slice(0, last.index).trim()
+    }
+  }
 
   const title = frontmatter.title || frontmatter.name || content.match(/^#+ (.*)$/m)?.[1]?.trim()
 
diff --git a/test/__snapshots__/parser.test.ts.snap b/test/__snapshots__/parser.test.ts.snap
index dd748cd861..0cd323c976 100644
--- a/test/__snapshots__/parser.test.ts.snap
+++ b/test/__snapshots__/parser.test.ts.snap
@@ -136,7 +136,7 @@ title: Hi
       },
     },
     "index": 1,
-    "note": "This is notes",
+    "note": "This is note",
     "raw": "---
 meta:
   title: FooBar
@@ -147,7 +147,7 @@ layout: center
 # Hello
 
 <!--
-This is notes
+This is note
 -->
 ",
     "start": 8,
@@ -170,22 +170,25 @@ This is notes
   },
   Object {
     "content": "
-<!-- This is not notes -->
+<!-- This is not note -->
 Hey
 ",
-    "end": 24,
+    "end": 26,
     "frontmatter": Object {
       "layout": "text",
     },
     "index": 3,
-    "note": undefined,
+    "note": "This is note",
     "raw": "---
 layout: text
 ---
 
-<!-- This is not notes -->
+<!-- This is not note -->
 Hey
 
+<!--
+This is note
+-->
 ",
     "start": 19,
     "title": undefined,
@@ -199,7 +202,7 @@ this should be treated as code block
 ----
 \`\`\`
 ",
-    "end": 33,
+    "end": 35,
     "frontmatter": Object {},
     "index": 4,
     "note": undefined,
@@ -212,7 +215,7 @@ this should be treated as code block
 \`\`\`
 
 ",
-    "start": 25,
+    "start": 27,
     "title": undefined,
   },
 ]
diff --git a/test/fixtures/markdown/frontmatter.md b/test/fixtures/markdown/frontmatter.md
index 4f70ab6839..4b50f7f78f 100644
--- a/test/fixtures/markdown/frontmatter.md
+++ b/test/fixtures/markdown/frontmatter.md
@@ -13,15 +13,17 @@ meta:
 layout: center
 ---
 # Hello
-<!-- This is notes -->
+<!-- This is note -->
 ---
 
 # Morning
 ---
 layout: text
 ---
-<!-- This is not notes -->
+<!-- This is not note -->
 Hey
+<!-- This is note -->
+
 ---
 
 ```md