diff --git a/modules/indexer/issues/db/db.go b/modules/indexer/issues/db/db.go
index 05ec548435f48..665f3c090229e 100644
--- a/modules/indexer/issues/db/db.go
+++ b/modules/indexer/issues/db/db.go
@@ -51,7 +51,6 @@ func (i *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 	//        The notification is defined in modules, but it's using lots of things should be in services.
 
 	cond := builder.NewCond()
-
 	if options.Keyword != "" {
 		repoCond := builder.In("repo_id", options.RepoIDs)
 		if len(options.RepoIDs) == 1 {
@@ -59,6 +58,11 @@ func (i *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 		}
 		subQuery := builder.Select("id").From("issue").Where(repoCond)
 
+		var issueCond builder.Cond
+		issueCond = nil
+		if options.Index.Has() {
+			issueCond = builder.Eq{"issue.index": options.Keyword}
+		}
 		cond = builder.Or(
 			db.BuildCaseInsensitiveLike("issue.name", options.Keyword),
 			db.BuildCaseInsensitiveLike("issue.content", options.Keyword),
@@ -70,6 +74,7 @@ func (i *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 					db.BuildCaseInsensitiveLike("content", options.Keyword),
 				)),
 			),
+			issueCond,
 		)
 	}
 
diff --git a/modules/indexer/issues/indexer.go b/modules/indexer/issues/indexer.go
index 1cb86feb82c28..9f2e04bddc190 100644
--- a/modules/indexer/issues/indexer.go
+++ b/modules/indexer/issues/indexer.go
@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"os"
 	"runtime/pprof"
+	"strconv"
 	"sync/atomic"
 	"time"
 
@@ -283,9 +284,13 @@ const (
 func SearchIssues(ctx context.Context, opts *SearchOptions) ([]int64, int64, error) {
 	indexer := *globalIndexer.Load()
 
-	if opts.Keyword == "" {
+	issueIndex, err := strconv.Atoi(opts.Keyword)
+	if err == nil {
+		opts.Index = optional.Option[int64]{int64(issueIndex)}
+	}
+	if opts.Keyword == "" || opts.Index.Has() {
 		// This is a conservative shortcut.
-		// If the keyword is empty, db has better (at least not worse) performance to filter issues.
+		// If the keyword is empty or an integer, db has better (at least not worse) performance to filter issues.
 		// When the keyword is empty, it tends to listing rather than searching issues.
 		// So if the user creates an issue and list issues immediately, the issue may not be listed because the indexer needs time to index the issue.
 		// Even worse, the external indexer like elastic search may not be available for a while,
diff --git a/modules/indexer/issues/internal/model.go b/modules/indexer/issues/internal/model.go
index 2dfee8b72e197..cdf5d1bc29c48 100644
--- a/modules/indexer/issues/internal/model.go
+++ b/modules/indexer/issues/internal/model.go
@@ -89,6 +89,8 @@ type SearchOptions struct {
 
 	MilestoneIDs []int64 // milestones the issues have
 
+	Index optional.Option[int64] // keyword as potential issue index
+
 	ProjectID       optional.Option[int64] // project the issues belong to
 	ProjectColumnID optional.Option[int64] // project column the issues belong to