The extremely metal-poor stars ([Fe/H]<-2.5)was formed in the early universe.Studies on the nucleosynthesis yield of the extremely metal-poor stars play a key role in the exploration of the formation of the solar system, the chemical evolution of galaxies and the fundamental issues in the nuclear astrophysics. In this paper, the neutron-capture element''s nucleosynthesis yields of the extremely metal-poor stars are calculated on the basis of the observed correlations between the neutron-capture process elements Sr, Y, Ba and Si elements and the theoretical yields of Si.