Abstract: The vertical and horizontal scatter degree is used to the multi-dimensional time series, which realize the purpose that the dynamic comprehensive evaluation problem is converted into a group evaluation. Aiming at the problem of the traditional differentiation driven empowerment about the sensitivity of the evaluation index, using cluster analysis for expert group first which reduce the number of experts actually, then using the method of double differences drive for expert group empowerment, finally get the comprehensive ranking 24 items of scientific and technological achievements. Empirical studies show that weighting method from overall difference and double difference experts empowerment method based on clustering analysis in comprehensive evaluation are stability and continuity.