Facebooks

Recently my ad account suddenly died. i need some solution can anyone help me?

If by "died" you mean got disabled then any number of reasons could have caused it. Here's a few: Unsettled or Pending payments, something Facebook describes as "Branded Content" or "Personal Attributes", Suggestive content, Facebook brand usage, or generally anything else under restricted content and goes against community guidelines.
You'll have to appeal the account restriction or block through the FB support team. Good luck.