diff --git a/pkg/utils/filepath/path.go b/pkg/utils/filepath/path.go
new file mode 100644
index 000000000..48d1e1320
--- /dev/null
+++ b/pkg/utils/filepath/path.go
@@ -0,0 +1,33 @@
+package filepath
+
+import (
+	stdfilepath "path/filepath"
+	"strings"
+)
+
+// 与标准库中的 [filepath.Dir] 类似，但会尝试保留原有的路径分隔符。
+//
+// 入参:
+//   - path: 文件路径。
+//
+// 出参:
+//   - 目录路径。
+func Dir(path string) string {
+	const SEP_WIN = "\\"
+	const SEP_UNIX = "/"
+
+	sep := SEP_UNIX
+	if strings.Contains(path, SEP_WIN) && !strings.Contains(path, SEP_UNIX) {
+		sep = SEP_WIN
+	}
+
+	dir := stdfilepath.Dir(path)
+
+	if sep != SEP_UNIX && strings.Contains(dir, SEP_UNIX) {
+		dir = strings.ReplaceAll(dir, SEP_UNIX, sep)
+	} else if sep != SEP_WIN && strings.Contains(dir, SEP_WIN) {
+		dir = strings.ReplaceAll(dir, SEP_WIN, sep)
+	}
+
+	return dir
+}
diff --git a/pkg/utils/ssh/io.go b/pkg/utils/ssh/io.go
index 7261e58fa..ff1d77536 100644
--- a/pkg/utils/ssh/io.go
+++ b/pkg/utils/ssh/io.go
@@ -5,11 +5,12 @@ import (
 	"errors"
 	"fmt"
 	"os"
-	"path/filepath"
 
 	"github.com/pkg/sftp"
 	"github.com/povsister/scp"
 	"golang.org/x/crypto/ssh"
+
+	xfilepath "github.com/certimate-go/certimate/pkg/utils/filepath"
 )
 
 // 与 [WriteRemote] 类似，但写入的是字符串内容。
@@ -97,7 +98,7 @@ func writeRemoteWithSFTP(sshCli *ssh.Client, path string, data []byte) error {
 	}
 	defer sftpCli.Close()
 
-	if err := sftpCli.MkdirAll(filepath.ToSlash(filepath.Dir(path))); err != nil {
+	if err := sftpCli.MkdirAll(xfilepath.Dir(path)); err != nil {
 		return fmt.Errorf("failed to create remote directory: %w", err)
 	}
 
@@ -122,7 +123,7 @@ func removeRemoteWithSFTP(sshCli *ssh.Client, path string) error {
 	}
 	defer sftpCli.Close()
 
-	if err := sftpCli.MkdirAll(filepath.ToSlash(filepath.Dir(path))); err != nil {
+	if err := sftpCli.MkdirAll(xfilepath.Dir(path)); err != nil {
 		return fmt.Errorf("failed to create remote directory: %w", err)
 	}