Essential operation properties for supply chain dynamic scheduling in mass customization are described and defined. To relieve the dominant contradiction, train of thought for scheduling process is put forward on the basis of former work. Then this thinking is followed in the operation process of dynamic scheduling, and supply chain scheduling mechanism in mass customization is also analyzed. Optimization mechanism is introduced into the process while finding the scheduling solution, and ants optimization algorithm for supply chain dynamic scheduling is adopt- ed to devise and improve its particular algorithm. Characteristic of the new algorithm lies in that in computation process it can not only reflect unique requirements for the operation characteristic of this manufacture mode, but will also compromise the relief train of thought for the dominant contradiction. Feasibility of the new algorithm ultimately gets validated through a simulation