Objective To explore fetal ductus venosus(DV) Doppler parameter and application value with gestational diabetes mellitus(GDM) in later gestation. Methods Seven-eight cases blood glucose controlled well of GDM women were in research group. One hundred thirty-six cases normal pregnant women were in control group. The ventricular systole(S),ventricular diastole( D),ventricular end-systole( v),atrium systole( a), time maximum velocity (Tmax) , S/a ratio, pulsatility index(PI), preload index(PLI) and peak velocity index vein(PVIV) of DV doppler parameters were detected by ultrasound. Two groups of parameters were analyzed and followed up the fetal outcome, then gestational age, delivery way, body mass and pregnancy outcome were compared. Results In group of GDM less than normal pregnant women were compared with the S, D, v, a, Tmax parameters of fetal DV, but the S/a ratio, PI, PLI and PVIV greater than control group. The S, D, v, a, Tmax and PVIV was significant difference in two groups(P＜0.05), the S/a ratio, PI and PLI was no difference(P＞0.05).In group of GDM gestational age and body mass was inferior to control group, but cesarean ratio and adverse pregnancy outcomes was superior to control group. Gestational age and cesarean ratio was significant difference in two groups(P＜0.05), the body mass and adverse pregnancy outcomes was no difference(P＞0.05). Conclusions Through the detection of GDM fetal DV blood flow spectrum was provided in later gestation, we can predict fetal pregnancy outcomes for clinical. We can prolong pregnancy duration in certain extent, reduce cesarean ratio and adverse pregnancy outcomes.