Fetal hydrops is a disease characterized by generalized subcutaneous edema and cavity effusion in the fetal stage. Mortality is high and depends on the gestational age at the time of occurrence and underlying etiology. Recent advances in obstetric ultrasound, prenatal diagnostics have made it possible to differentiate various etiologies involved. It is also possible to treat some of this fetus prenatally. We report a case of fetal hydrops diagnosed by three dimensional (3-D) ultrasonogram with a brief literature.