Talent accumulation is the result of talent flowage. There will be the phenomenon of talent accumulation when the talents keep on flowing. With the agreeable internal and external environment and the harmonious interpersonal relatiortship, talent accumulation will be multiplied and bring on the effect of talent accumulation consequently. After analyzing the phenomenon of talent accumulation, this paper puts forward the concept of the phenomenon and effect of talent accumulation, eight characteristics of it, such as the effect of knowledge overflow and innovation. On the basis of it, this article ranges the characters of the effect of talent aggregation with analytic hierarchy process. There are innovational effect, area effect, time effect, scale effect, incentive effect, effect of information sharing, effect of knowledge spillover, effect of collective learning in turn. This supports basis for emphatic management in the process of promoting the phenomenon of talent accumulation turning to the effect of talent accumulation.