您需要检查文件夹是否存在。如果不存在，则创建它。此函数完成此工作。在保存工作簿之前放置它。

'requires reference to Microsoft Scripting Runtime
Function MkDir(strDir As String, strPath As String)

Dim fso As New FileSystemObject
Dim path As String

'examples of the input arguments
'strDir = "Folder"
'strPath = "C:\"

path = strPath & strDir

If Not fso.FolderExists(path) Then

' doesn't exist, so create the folder
          fso.CreateFolder path

End If

End Function

最好避免使用Shell命令，因为它可能会由于各种原因返回错误。您的代码甚至忽略/绕过错误，这是不明智的。

不需要引用Microsoft脚本运行时。

Dim path_ As String
    path_ = "G:\BUYING\Food Specials\4. Food Promotions\(1) PLANNING\(1) Projects\Promo Announcements\" & .Range("H" & i) & "\KW " & .Range("A" & i)

Dim name_ As String
    name_ = file & " - " & file3 & " (" & file2 & ").xlsx"

With CreateObject("Scripting.FileSystemObject")
    If Not .FolderExists(path_) Then .CreateFolder path_
End With

wbTemplate.SaveCopyAs Filename:=path_ & "\" & name_

或

Dim path_ As String
    path_ = "G:\BUYING\Food Specials\4. Food Promotions\(1) PLANNING\(1) Projects\Promo Announcements\" & .Range("H" & i) & "\KW " & .Range("A" & i)

Dim name_ As String
    name_ = file & " - " & file3 & " (" & file2 & ").xlsx"

If Len(Dir(path_, vbDirectory)) = 0 Then MkDir path_

wbTemplate.SaveCopyAs Filename:=path_ & "\" & name_

运行此宏两次以进行确认和测试。
第一次运行应在桌面上创建目录“TEST”和MsgBox“Making Directory！"。
第二次运行应仅显示MsgBox“目录存在！”

Sub mkdirtest()
Dim strFolderPath As String

strFolderPath = Environ("USERPROFILE") & "\Desktop\TEST\"
CheckDir (strFolderPath)

End Sub

Function CheckDir(Path As String)

    If Dir(Path, vbDirectory) = "" Then
        MkDir (Path)
        MsgBox "Making Directory!"
    'End If
    Else
        MsgBox "Dir Exists!"
    End If

End Function

当可以使用错误处理程序时，为什么还要手动显式检查：

On Error Resume Next
MkDir directoryname
On Error Goto 0

为了确保整个路径存在，递归可能会有所帮助：

'.
    '.
    DIM FSO as new Scripting.FilesystemObject
    '.
    '.
    Public Sub MkDirIfNotExist(strPath As String)
        If strPath = "" Then Err.Raise 53 'File not found e.g. Drive does not exists
        If Not FSO.FolderExists(strPath) Then
            MkDirIfNotExist FSO.GetParentFolderName(strPath)
            FSO.CreateFolder strPath
        End If
    End Sub

sub dosomethingwithfileifitexists()
If IsFile("filepathhere") = True Then
end if
end sub

Function IsFile(ByVal fName As String) As Boolean
'Returns TRUE if the provided name points to an existing file.
'Returns FALSE if not existing, or if it's a folder
    On Error Resume Next
    IsFile = ((GetAttr(fName) And vbDirectory) <> vbDirectory)
End Function

这是我在网上找到的一个方便的小功能，我不记得它是从哪里来的了！向代码的作者道歉。

这是最简单、最快捷的方法：

'requires reference to Microsoft Scripting Runtime
    sub createDir(ByVal pathFolder As String)
    Dim fso As Object
    Dim path As String
    Application.ScreenUpdating = False
    Set fso = CreateObject("Scripting.FileSystemObject")
    
    If Not fso.FolderExists(pathFolder) Then
    ' doesn't exist, so create the folder
         fso.CreateFolder pathFolder
    End If

    Set fso = Nothing
    Application.ScreenUpdating = True
    End Sub

在阅读了这里的公认答案，并尝试它，它不工作。所以我写了下面的函数，测试它，它确实工作。
它根本不需要添加任何库引用，因为它使用的是后期绑定

Function FolderCreate(ByVal strPathToFolder As String, ByVal strFolder As String) As Variant

'The function FolderCreate attemps to create the folder strFolder on the path strPathToFolder _
' and returns an array where the first element is a boolean indicating if the folder was created/already exists
' True meaning that the folder already exists or was successfully created, and False meaning that the folder _
' wans't created and doesn't exists
'
'The second element of the returned array is the Full Folder Path , meaning ex: "C:\MyExamplePath\MyCreatedFolder"

Dim fso As Object
'Dim fso As New FileSystemObject
Dim FullDirPath As String
Dim Length As Long

'Check if the path to folder string finishes by the path separator (ex: \) ,and if not add it
If Right(strPathToFolder, 1) <> Application.PathSeparator Then
    strPathToFolder = strPathToFolder & Application.PathSeparator
End If

'Check if the folder string starts by the path separator (ex: \) , and if it does remove it
If Left(strFolder, 1) = Application.PathSeparator Then
    Length = Len(strFolder) - 1
    strFolder = Right(strFolder, Length)
End If

FullDirPath = strPathToFolder & strFolder

Set fso = CreateObject("Scripting.FileSystemObject")

If fso.FolderExists(FullDirPath) Then
    FolderCreate = Array(True, FullDirPath)
Else
    On Error GoTo ErrorHandler
    fso.CreateFolder path:=FullDirPath
    FolderCreate = Array(True, FullDirPath)
    On Error GoTo 0
End If

SafeExit:
    Exit Function

ErrorHandler:
    MsgBox prompt:="A folder could not be created for the following path: " & FullDirPath & vbCrLf & _
            "Check the path name and try again."
    FolderCreate = Array(False, FullDirPath)

End Function

你可以使用错误处理函数来完成这个任务，比如：

Sub subCreatesNewFolderIfThereIsNotExists(strFolderName As String)

On Error GoTo CaseFolderExists
    
    strFullPath = ThisWorkbook.path & "\" & strFolderName
    
    MkDir (strFullPath)

    Exit Sub

CaseFolderExists:
    ''' Do nothing
    
End Sub