Physics program of open charm and heavy c states at the BES-Ⅲ experiment

We present the physics program of the open charm and heavy c states above the DD production energy threshold,which will be studied with the BES-Ⅲ detector at the BEPC-Ⅱ collider in the coming years.Based on some full Monte Carlo simulations with the BES-Ⅲ detector,we predict the accuracy levels on measuring some physical quantities related to D0,D+ and D+s decays as well as some non-charmed decays of the heavy c states.