In view of simulation for concrete dam construction process of the Xiangjiaba Hydro Station, the paper systemically analyses the relation and condition among various main factors during concrete dam construction process. An integration plan, with tower belts and cable cranes as the main equipment and the gantry cranes, belt conveyers as the supplementary equipment, has been adopted for Xiangjiaba construction. By using algorithmic procedure of choosing block from separate bin, simulation result for concrete dam construction is made in the form of three-dimension visual simulation. Furthermore, the authors haveresolved key questions of optimizing execution program of work, matching construction machine and equipment and verification of dam construction schedule.