Abstract: Analyses the deficiency of conventional designation and introduces the rough sets theory and fuzzy designation of human resource. Then, the fuzzy designation of human resource in the process of developing new products of a company in dynamic alliance is studied. A mathematics model is thus developed, by which the competency indices of technical personnel are reduced attributively with weight coefficients calculated through the theory of variable precision rough sets. In the index attribute, the personal will of technical personnel is considered to make them more active. The index attribute is evaluated fuzzily by experts to form compound matrices in accordance to the weight coefficients based on rough sets. The compound matrices are converted to a single-target decision problem which can be solved by Hungary algorithm. Some numerical examples are given to illustrate the validity of the algorithm proposed and the practicability of the model.