diff --git a/kernel/go.mod b/kernel/go.mod
index 5f703f748..6f414f46b 100644
--- a/kernel/go.mod
+++ b/kernel/go.mod
@@ -58,10 +58,13 @@ require (
 
 require (
 	dmitri.shuralyov.com/font/woff2 v0.0.0-20180220214647-957792cbbdab // indirect
+	github.com/BobuSumisu/aho-corasick v1.0.3 // indirect
 	github.com/Masterminds/goutils v1.1.1 // indirect
 	github.com/Masterminds/semver/v3 v3.2.0 // indirect
 	github.com/alecthomas/chroma v0.10.0 // indirect
 	github.com/andybalholm/cascadia v1.3.1 // indirect
+	github.com/anknown/ahocorasick v0.0.0-20190904063843-d75dbd5169c0 // indirect
+	github.com/anknown/darts v0.0.0-20151216065714-83ff685239e6 // indirect
 	github.com/asaskevich/EventBus v0.0.0-20200907212545-49d423059eef // indirect
 	github.com/aws/aws-sdk-go v1.44.199 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
diff --git a/kernel/go.sum b/kernel/go.sum
index df5f3f4d9..3ff4e5003 100644
--- a/kernel/go.sum
+++ b/kernel/go.sum
@@ -16,6 +16,8 @@ github.com/88250/pdfcpu v0.3.13 h1:touMWMZkCGalMIbEg9bxYp7rETM+zwb9hXjwhqi4I7Q=
 github.com/88250/pdfcpu v0.3.13/go.mod h1:S5YT38L/GCjVjmB4PB84PymA1qfopjEhfhTNQilLpv4=
 github.com/88250/vitess-sqlparser v0.0.0-20210205111146-56a2ded2aba1 h1:48T899JQDwyyRu9yXHePYlPdHtpJfrJEUGBMH3SMBWY=
 github.com/88250/vitess-sqlparser v0.0.0-20210205111146-56a2ded2aba1/go.mod h1:U3pckKQIgxxkmZjV5yXQjHdGxQK0o/vEZeZ6cQsxfHw=
+github.com/BobuSumisu/aho-corasick v1.0.3 h1:uuf+JHwU9CHP2Vx+wAy6jcksJThhJS9ehR8a+4nPE9g=
+github.com/BobuSumisu/aho-corasick v1.0.3/go.mod h1:hm4jLcvZKI2vRF2WDU1N4p/jpWtpOzp3nLmi9AzX/XE=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/ConradIrwin/font v0.0.0-20210318200717-ce8d41cc0732 h1:0EDePskeF4vNFCk70ATaFHQzjmwXsk+VImnMJttecNU=
 github.com/ConradIrwin/font v0.0.0-20210318200717-ce8d41cc0732/go.mod h1:krTLO7JWu6g8RMxG8sl+T1Hf8W93XQacBKJmqFZ2MFY=
@@ -33,6 +35,10 @@ github.com/alecthomas/chroma v0.10.0 h1:7XDcGkCQopCNKjZHfYrNLraA+M7e0fMiJ/Mfikbf
 github.com/alecthomas/chroma v0.10.0/go.mod h1:jtJATyUxlIORhUOFNA9NZDWGAQ8wpxQQqNSB4rjA/1s=
 github.com/andybalholm/cascadia v1.3.1 h1:nhxRkql1kdYCc8Snf7D5/D3spOX+dBgjA6u8x004T2c=
 github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEqc0Sk8XGwHqvA=
+github.com/anknown/ahocorasick v0.0.0-20190904063843-d75dbd5169c0 h1:onfun1RA+KcxaMk1lfrRnwCd1UUuOjJM/lri5eM1qMs=
+github.com/anknown/ahocorasick v0.0.0-20190904063843-d75dbd5169c0/go.mod h1:4yg+jNTYlDEzBjhGS96v+zjyA3lfXlFd5CiTLIkPBLI=
+github.com/anknown/darts v0.0.0-20151216065714-83ff685239e6 h1:HblK3eJHq54yET63qPCTJnks3loDse5xRmmqHgHzwoI=
+github.com/anknown/darts v0.0.0-20151216065714-83ff685239e6/go.mod h1:pbiaLIeYLUbgMY1kwEAdwO6UKD5ZNwdPGQlwokS9fe8=
 github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de h1:FxWPpzIjnTlhPwqqXc4/vE0f7GvRjuAsbW+HOIe8KnA=
 github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de/go.mod h1:DCaWoUhZrYW9p1lxo/cm8EmUOOzAPSEZNGF2DK1dJgw=
 github.com/asaskevich/EventBus v0.0.0-20200907212545-49d423059eef h1:2JGTg6JapxP9/R33ZaagQtAM4EkkSYnIAlOG5EI8gkM=
diff --git a/kernel/model/virutalref.go b/kernel/model/virutalref.go
index 674d33c72..2caf4d75a 100644
--- a/kernel/model/virutalref.go
+++ b/kernel/model/virutalref.go
@@ -18,6 +18,8 @@ package model
 
 import (
 	"bytes"
+	goahocorasick "github.com/anknown/ahocorasick"
+	"github.com/siyuan-note/logging"
 	"regexp"
 	"sort"
 	"strings"
@@ -27,7 +29,6 @@ import (
 	"github.com/88250/lute"
 	"github.com/88250/lute/ast"
 	"github.com/88250/lute/parse"
-	"github.com/cloudflare/ahocorasick"
 	"github.com/dgraph-io/ristretto"
 	"github.com/siyuan-note/siyuan/kernel/search"
 	"github.com/siyuan-note/siyuan/kernel/sql"
@@ -70,22 +71,38 @@ func putBlockVirtualRefKeywords(blockContent, blockID, docTitle string) (ret []s
 	}
 
 	contentTmp := blockContent
-	keywordsTmp := keywords
+	var keywordsTmp [][]rune
 	if !Conf.Search.CaseSensitive {
 		contentTmp = strings.ToLower(blockContent)
-		for i, keyword := range keywordsTmp {
-			keywordsTmp[i] = strings.ToLower(keyword)
+		for _, keyword := range keywords {
+			keywordsTmp = append(keywordsTmp, []rune(strings.ToLower(keyword)))
+		}
+	} else {
+		for _, keyword := range keywords {
+			keywordsTmp = append(keywordsTmp, []rune(keyword))
 		}
 	}
 
 	if 1024*1024 < len(contentTmp) {
-		matcher := ahocorasick.NewStringMatcher(keywords)
-		hits := matcher.Match([]byte(contentTmp))
-		for _, hit := range hits {
-			ret = append(ret, keywords[hit])
+		m := goahocorasick.Machine{}
+		buildErr := m.Build(keywordsTmp)
+		if nil != buildErr {
+			logging.LogWarnf("build virtual ref keywords AC matcher failed: %s", buildErr)
+			for _, keywordRunes := range keywordsTmp {
+				keyword := string(keywordRunes)
+				if strings.Contains(contentTmp, keyword) {
+					ret = append(ret, keyword)
+				}
+			}
+		} else {
+			hits := m.MultiPatternSearch([]rune(contentTmp), false)
+			for _, hit := range hits {
+				ret = append(ret, string(hit.Word))
+			}
 		}
 	} else {
-		for _, keyword := range keywordsTmp {
+		for _, keywordRunes := range keywordsTmp {
+			keyword := string(keywordRunes)
 			if strings.Contains(contentTmp, keyword) {
 				ret = append(ret, keyword)
 			}