To create a table I click on the create table icon shown in the picture here
When Click on the create table icon,then I found like this picture
I could not found name property there to create column.How can i find this?
In Toad you can create a table automatically,
following the bellow path, you reach the create table menu:
Database/ Create/ Table:
As you see you can fill column name after click add column button
if you cant see this maybe your toad version is old or there is a bug on installation or something else.
you can try repair or re installation