\documentclass{jarticle}
\usepackage{graphicx}
\usepackage{multicol}
\setlength{\columnsep}{2zw}
\setlength{\columnseprule}{0.4pt}

\makeatletter
\newcommand{\figcaption}[1]{\def\@captype{figure}\caption{#1}}
\newcommand{\tblcaption}[1]{\def\@captype{table}\caption{#1}}
\renewcommand{\thefigure}{
\thesection.\arabic{figure}}
\@addtoreset{figure}{section}
\renewcommand{\thetable}{
\thesection.\arabic{table}}
\@addtoreset{table}{section}
\makeatother

\usepackage{subfigure}

\newlength{\subfigwidth}
\newlength{\subfigcolsep}
\setlength{\subfigcolsep}{2\tabcolsep}
\setkeys{Gin}{width=\subfigwidth}

\def\iroh{色は匂へど散りぬるを我が世誰ぞつねならむ
有為の奥山今日越えて浅き夢見じ酔ひもせず一二三}
\def\Iroh{\iroh\iroh\iroh\iroh\iroh\iroh\iroh\iroh\iroh\iroh\par}

\begin{document}

\begin{multicols}{2}[\section{A}]
\iroh \iroh
\end{multicols}

\begin{multicols}{2}[\section{B}]
参照すると、図\ref{fig:figa01}、図\ref{fig:figa11}、図\ref{fig:figa12}、
図\ref{fig:figa21}、図\ref{fig:figa22}
となります。
\end{multicols}

\begin{figure}
  \setlength{\subfigwidth}{.5\linewidth}
  \addtolength{\subfigwidth}{-.5\subfigcolsep}
  \begin{minipage}[b]{\subfigwidth}
    \centering\subfigure[The first one.]{\includegraphics[width=2cm]{tiger.eps}
   \label{fig:figa11}}
  \end{minipage}
  \begin{minipage}[b]{\subfigwidth}
    \centering\subfigure[The second one.]{\includegraphics[width=2cm]{tiger.eps}
   \label{fig:figa12}}
  \end{minipage}
  \begin{minipage}[b]{\subfigwidth}
    \centering\subfigure[The third one.]{\includegraphics[width=2cm]{tiger.eps}
   \label{fig:figa21}}
  \end{minipage}
  \begin{minipage}[b]{\subfigwidth}
    \centering\subfigure[The fourth one.]{\includegraphics[width=2cm]{tiger.eps}
   \label{fig:figa22}}
  \end{minipage}
  \caption{4 Tigers}
  \label{fig:figa01}
\end{figure}

\begin{center}
\figcaption{Tiger}
\centering\includegraphics[width=3cm]{tiger.eps}
\end{center}

\end{document}
