Can a person file tax return without working but has children
You don't have to file tax return if you have children and you don't work. However, if you need to, you will get a refund on any federal income tax withheld. For more information, check at http://turbotax.intuit.com/support/iq/Other-Tax-Situations/Do-I-Need-to-File-a-Income-Tax-Return-/GEN12413.html.
If you don't work,you don't file a tax return. It is called income tax for a reason -- it is tax on your income. No income--no tax or tax refund.