How about this solution using tcolorbox ?
\documentclass{article}
\usepackage[many]{tcolorbox}
\newtcolorbox[auto counter]{myfigure}[2][]{enhanced,center upper,
colback=white,colbacktitle=black!20!white,coltitle=black,
arc=0pt,outer arc=0pt,fonttitle=\scshape,lefttitle=2.4cm,
boxrule=0.3mm,
overlay={
\fill[black!20!white] ([xshift=2.2cm,yshift=-0.3mm]title.south west) rectangle (frame.north east);
\fill[black] ([yshift=-0.3mm]title.south west) rectangle
node[white] {\sffamily Figure~\thetcbcounter}
([xshift=2.2cm]title.north west);
},title={#2},#1}
\begin{document}
\begin{myfigure}{Prevalence des Prescriptions des Molecules d'Antibiotiques
les plus Frequntes, par Annee d'Enquete}
\includegraphics[width=10cm]{example-image-a}
\end{myfigure}
\end{document}

If this new figure should contain the chapter number and behave like an 'ordinary' LaTeX figure, use the following modification:
\newtcolorbox[use counter=figure,number within=chapter,
list inside=lof,list type=figure]{myfigure}[2][]{enhanced,center upper,
colback=white,colbacktitle=black!20!white,coltitle=black,
arc=0pt,outer arc=0pt,fonttitle=\scshape,lefttitle=2.4cm,
boxrule=0.3mm,
overlay={
\fill[black!20!white] ([xshift=2.2cm,yshift=-0.3mm]title.south west) rectangle (frame.north east);
\fill[black] ([yshift=-0.3mm]title.south west) rectangle
node[white] {\sffamily Figure~\thetcbcounter}
([xshift=2.2cm]title.north west);
},title={#2},#1}
Then, the new figure will be listed inside the list of figures using
\listoffigures
pgfplotspackage. – Claudio Fiandrino May 12 '14 at 07:42pgfplotsthat can make plots, but you will have to make changes to get a good reproduction of the example. – Joseph Wright May 12 '14 at 07:45I want a box around the graphics included that containd the number of figure and the caption.
– user42987 May 12 '14 at 08:07tcolorboxormdframedpackages, combined with thecaptionpackage. – Bernard May 12 '14 at 09:01