Based on the analysis of the minimal conflict sets features and the intersecting-side algorithm, this article present a method for extracting the minimal conflict sets,it is shown by an example that the minimal conflict sets to distinguish and solve constraint conflict validity under the designe.

Studied the collaborative design function request, the overall concept with emphasis, product management, instance manage, the conflict restraint and so on key technologies, the development collaborative design system has provided the new working platform for the enterprise, reduced development cycle, obtained the good economic efficiency.

As an endogenous product of gradual institutonal transition,private economy′s developmental restriction is resulted from lag and inharmony of institutional transition.