Objective To explore the value of transesophageal doppler in transurethral resection prostate.Methods Thirty-six patients (aged 60-85 years, falling into ASA grade Ⅰ-Ⅲ) of benign prostatic hyperplasia for undergoing transurethral resection prostate were enrolled.Through multifunction monitor, CVP, Narcotrend index(NI) were monitored before anesthesia induction (T0), 20 minutes after anesthesia induction (T1), after irrigating fluid of 5 000 ml (T2) and 10 000 ml (T3) and 15 000 ml (T4) and 20 000 ml (T5).By transesophageal doppler, FTc(corrected flowtime), SV(stroke volume), ΔPV(peak flow vaviable quantity) were monitored at T1-T5.Results CVP at T1-T5 were not significantly changed compared with that at T0.Compared with T1, FTc, SV at T3-T5were significantly increased and ΔPV at T2-T5were significantly decreased (P<0.05).CVP levels correlated significantly with both FTc (r=0.702, P<0.01) and SV (r=0.595, P<0.01).CVP negatively correlated significantly with ΔPV (r=-0.351, P<0.05).Furthermore, FTc correlated significantly with the concentrationof Na+(r=0.672,P<0.01).No patient had serum sodium ion concentration less than 125 mmol/L.Conclusion FTc of transesophageal doppler is as accurate as central venous pressure in monitoring hemodynamic changes, and even more sensitive than CVP.It is useful in early diagnosis and treatment of TURS.