I want that the Problem's part of my book be considered at the table of content but I don't want it be numbered in my main text as a section . How can I Handle it ?

\dodumentclass{book}
\begin{document}‎

‎\maketitle‎
\tableofcontents‎
‎\listoffigures‎
\listoftables‎
‎
\section{problem}
\end{document}‎

-

If your chapters end with a "Problems" section, the best is to define a macro to do the job in a consistent way:

\newcommand{\problems}{%
\section*{Problems}

\problems

The key is the \addcontentsline, that adds the entry to the table of contents. You might need to add something to adjust the headers, if you use them.