LaTeX.org

Hi and welcome,
this is possible in theory. Praxis says, there are different methods to do so, depending on the documentclass for example.
Can you add a minimal working example that shows us just the basics of your document?
What do you mean by number of applications?
\input{preamble}

\input ...

I want to at the beginning of each page of the appendix is header "Continue Appendix #" with the number of appendix. How can I do it?