excel vba 多for循环和多条件问题？

NEXT I之后的END IF应该放在NEXT I之前，另外EXIT SUB的IF我取消了ELSE和END IF，因为满足条件时肯定不执行后面的代码了，由于我在SUB里面编译，自己定义了一个Mee代替你的Me，目前编译没有问题，逻辑估计是你需要的：

Dim aim As Worksheet, Mee
Set aim = Sheets("RE Database")
Dim i As Integer
Dim j As Integer
If M_type.Text = "" Then Exit Sub
For i = 3 To 200
If Mee.M_level1.Text = aim.Cells(5, i) Then
For j = 5 To 100
If aim.Cells(j, i) <> "" Then
Mee.M_level1.AddItem aim.Cells(j, i)
Else
Exit For
End If
Next j
Exit For
Else
End If
Next i

Dim aim As Worksheet
Set aim = Sheets("RE Database")
Dim i As Integer
Dim j As Integer
If M_type.Text = "" Then
Exit Sub
Else
For i = 3 To 200
If Me.M_level1.Text = aim.Cells(5, i) Then
For j = 5 To 100
If aim.Cells(j, i) <> "" Then
Me.M_level1.AddItem aim.Cells(j, i)
Else
Exit For
End If
Next j
Exit For
Else
goto 100
End If
100：
Next i
end if

For j = 5 To 100
If aim.Cells(j, i) <> "" Then
Me.M_level1.AddItem aim.Cells(j, i)
Else
Exit For
End If
Next j
End If
Next i
End If
End If