The aim of this study was to investigate optimize adsorption conditions of adsorption Cd~(2+) process,and research the adsorption mechanism on the adsorption of Cd~(2+) from aqueous solution using rape straw pith. Box-Behnken experimental design of the response surface methodology was applied to evaluate the combined effect of different operating parameters,namely initial Cd~(2+) concentration,p H range,adsorbent dose and equilibrium time on the removal of Cd~(2+) from aqueous solution using rape straw pith...