  In this paper, we study the scattering and absorption sections of the
Schwarzschild--anti de Sitter black hole surrounded by quintessence. The
critical values of the cosmological constant and the normalization factor are
obtained. We describe the event horizons and the extremal condition of the
black hole surrounded by quintessence. The effects of quintessence on the
classical and semi--classical scattering cross--sections have been estimated.
Also, the absorption section is studied with the sinc approximation in the
eikonal limit. We consider the quintessence state parameter in the particular
cases $\omega=-2/3$ and $\omega=-1/2$.
