Abstract: Obj ective To explore changes of plasma NT-proBNP and inflamatory cytokines levels before and after treatment for preeclampsia.Methods The levels of NT-proBNP(with fluore-scent immunoassay)and infammatory cytokines(IL-6 ,hs-CRP and TNF-αwith high-sensitive en-zyme immunoassay and radio immunoassay)in plasma were detected in 93 patients with preeclamp-sia (including 45 cases of light pre-eclampsia and 48 cases of severe pre-eclampsia),and 42 normal people were collected and detected for contrastive analysis.Results Before treatment,the plasma NT-proBNP and inflammatory cytokines (IL-6 ,hs-CRP and TNF-α)levels in 93 patients with preeclampsia were significantly higher than those in 42 normal people (P<0 .0 1 ).The plasma NT-proBNP,IL-6,hs-CRP and TNF-αlevels increased with increasing degree of preeclampsia.After treatment,the levels of NT-proBNP,IL-6,hs-CRP and TNF-αin 45 patients with light pre-eclampsia reached to normal level (P>0 .05 ).Though the plasma IL-6 level reached to normal lev-el,the levels of NT-proBNP,hs-CRP and TNF-αin 48 patients with severe pre-eclampsia were sig-nificantly higher than those in 42 normal people (P<0 .05 ).Conclusion The plasma NT-proBNP and inflammatory cytokines participate in pathogenesis process of preeclampsia,and these two indi-cators are effective monitoring index for the early treatment of preeclampsia.