diff --git a/src/muya/lib/assets/styles/index.css b/src/muya/lib/assets/styles/index.css
index 4fd5fd8c..b9145a7d 100644
--- a/src/muya/lib/assets/styles/index.css
+++ b/src/muya/lib/assets/styles/index.css
@@ -45,7 +45,7 @@ div.ag-show-quick-insert-hint p.ag-paragraph.ag-active > span.ag-line:first-of-t
 
 .ag-reference-marker {
   font-size: .9em;
-  color: var(--editorColor10);
+  color: var(--editorColor50);
 }
 
 .ag-reference-title {
diff --git a/src/muya/lib/parser/parse.js b/src/muya/lib/parser/parse.js
index 5516612d..3e6d3af6 100644
--- a/src/muya/lib/parser/parse.js
+++ b/src/muya/lib/parser/parse.js
@@ -93,7 +93,7 @@ const validateEmphasize = (src, offset, marker, pending) => {
   return lowerPriority(src, offset)
 }
 
-const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top) => {
+const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top, labels) => {
   const tokens = []
   let pending = ''
   let pendingStartPos = pos
@@ -211,7 +211,7 @@ const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top) => {
             range,
             marker,
             parent: tokens,
-            children: tokenizerFac(to[2], undefined, inlineRules, pos + to[1].length, false),
+            children: tokenizerFac(to[2], undefined, inlineRules, pos + to[1].length, false, labels),
             backlash: to[3]
           })
           src = src.substring(to[0].length)
@@ -252,7 +252,7 @@ const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top) => {
             range,
             marker,
             parent: tokens,
-            children: tokenizerFac(to[2], undefined, inlineRules, pos + to[1].length, false),
+            children: tokenizerFac(to[2], undefined, inlineRules, pos + to[1].length, false, labels),
             backlash: to[3]
           })
         }
@@ -301,7 +301,7 @@ const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top) => {
           start: pos,
           end: pos + linkTo[0].length
         },
-        children: tokenizerFac(linkTo[2], undefined, inlineRules, pos + linkTo[1].length, false),
+        children: tokenizerFac(linkTo[2], undefined, inlineRules, pos + linkTo[1].length, false, labels),
         backlash: {
           first: linkTo[3],
           second: linkTo[5]
@@ -314,9 +314,8 @@ const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top) => {
     }
 
     const rLinkTo = inlineRules['reference_link'].exec(src)
-    if (rLinkTo && isLengthEven(rLinkTo[2]) && isLengthEven(rLinkTo[4])) {
+    if (rLinkTo && labels.has(rLinkTo[3] || rLinkTo[1]) && isLengthEven(rLinkTo[2]) && isLengthEven(rLinkTo[4])) {
       pushPending()
-
       tokens.push({
         type: 'reference_link',
         raw: rLinkTo[0],
@@ -332,7 +331,7 @@ const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top) => {
           start: pos,
           end: pos + rLinkTo[0].length
         },
-        children: tokenizerFac(rLinkTo[1], undefined, inlineRules, pos + 1, false)
+        children: tokenizerFac(rLinkTo[1], undefined, inlineRules, pos + 1, false, labels)
       })
 
       src = src.substring(rLinkTo[0].length)
@@ -424,7 +423,7 @@ const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top) => {
         parent: tokens,
         attrs,
         content: htmlTo[4],
-        children: htmlTo[4] ? tokenizerFac(htmlTo[4], undefined, inlineRules, pos + htmlTo[2].length, false) : '',
+        children: htmlTo[4] ? tokenizerFac(htmlTo[4], undefined, inlineRules, pos + htmlTo[2].length, false, labels) : '',
         range: {
           start: pos,
           end: pos + len
@@ -502,8 +501,8 @@ const tokenizerFac = (src, beginRules, inlineRules, pos = 0, top) => {
   return tokens
 }
 
-export const tokenizer = (src, highlights = [], hasBeginRules = true) => {
-  const tokens = tokenizerFac(src, hasBeginRules ? beginRules : null, inlineRules, 0, true)
+export const tokenizer = (src, highlights = [], hasBeginRules = true, labels = new Map()) => {
+  const tokens = tokenizerFac(src, hasBeginRules ? beginRules : null, inlineRules, 0, true, labels)
   const postTokenizer = tokens => {
     for (const token of tokens) {
       for (const light of highlights) {
diff --git a/src/muya/lib/parser/render/index.js b/src/muya/lib/parser/render/index.js
index 4d0da60e..f59cd720 100644
--- a/src/muya/lib/parser/render/index.js
+++ b/src/muya/lib/parser/render/index.js
@@ -186,6 +186,7 @@ class StateRender {
         patch(oldCursorVnode, newCursorVnode)
       }
     }
+
     this.renderMermaid()
     this.renderDiagram()
   }
diff --git a/src/muya/lib/parser/render/renderBlock/renderLeafBlock.js b/src/muya/lib/parser/render/renderBlock/renderLeafBlock.js
index c97f59ba..968b6ebb 100644
--- a/src/muya/lib/parser/render/renderBlock/renderLeafBlock.js
+++ b/src/muya/lib/parser/render/renderBlock/renderLeafBlock.js
@@ -79,7 +79,7 @@ export default function renderLeafBlock (block, cursor, activeBlocks, matches, u
       functionType !== 'languageInput'
     ) {
       const hasBeginRules = /^(h\d|span|hr)/.test(type)
-      tokens = tokenizer(text, highlights, hasBeginRules)
+      tokens = tokenizer(text, highlights, hasBeginRules, this.labels)
       if (highlights.length === 0 && useCache && DEVICE_MEMORY >= 4) {
         this.tokenCache.set(text, tokens)
       }
diff --git a/src/muya/lib/parser/render/renderInlines/referenceLink.js b/src/muya/lib/parser/render/renderInlines/referenceLink.js
index 2879300a..b3c5c313 100644
--- a/src/muya/lib/parser/render/renderInlines/referenceLink.js
+++ b/src/muya/lib/parser/render/renderInlines/referenceLink.js
@@ -15,23 +15,8 @@ export default function referenceLink (h, cursor, block, token, outerClass) {
     label
   } = token
   const MARKER = '['
-  let href = ''
-  let title = ''
   const key = (label + backlash.second).toLowerCase()
-  if (this.labels.has(key)) {
-    ({ href, title } = this.labels.get(key))
-  } else {
-    // if the link's reference definition is not defined, just show as normal text.#432
-    return this.highlight(h, block, start, end, token)
-  }
   const backlashStart = start + MARKER.length + anchor.length
-  const startMarker = this.highlight(
-    h,
-    block,
-    start,
-    start + MARKER.length,
-    token
-  )
   const content = [
     ...children.reduce((acc, to) => {
       const chunk = this[snakeToCamel(to.type)](h, cursor, block, to, className)
@@ -39,6 +24,14 @@ export default function referenceLink (h, cursor, block, token, outerClass) {
     }, []),
     ...this.backlashInToken(h, backlash.first, className, backlashStart, token)
   ]
+  const { href, title } = this.labels.get(key)
+  const startMarker = this.highlight(
+    h,
+    block,
+    start,
+    start + MARKER.length,
+    token
+  )
   const endMarker = this.highlight(
     h,
     block,
diff --git a/src/muya/themes/default.css b/src/muya/themes/default.css
index 7b3123ba..ce46442a 100644
--- a/src/muya/themes/default.css
+++ b/src/muya/themes/default.css
@@ -118,7 +118,7 @@ kbd {
   border: 1px solid var(--floatBorderColor);
   border-radius: 4px;
   display: inline-block;
-  transform: scale(.8);
+  font-size: .8em;
   padding: 0px 5px;
   box-shadow: inset 0 -1px 0 var(--floatBorderColor);
 }