The unified necessary and sufficient optimality conditions for weakly and strongly minimal elements in preinvex set-valued optimization are given respectively. Thus the corresponding results concerning convex set-valued optimization are generalized.

• 分别给出了准凸集值优化的弱极小元和强极小元的统一的充分必要优化条件,从而推广了关于凸集值优化的相应结果。