Introduction: Currently, congenital heart anomalies are the most common anomalies at birth with the incidence rate 8 to 10 per 1000 live births. Fetal heart is small and mobile. The placement of embryos in uterus does not always allow us to take standard images. So, we are faced with an immense variety of images that make it difficult to interpret the abnormal form normal situations (especially in Axis off images). Fetal heart echocardiography is a method to diagnose congenital heart disorders and helps us check fetal heart structure and detect many of the major disorders before birth. The best time for fetal echocardiography is 18 to 24 weeks of gestational age. It can be carried out from the14th week if there is echocardiography device with high sensitivity and accuracy as well as enough experience.
Conclusion: The identification and diagnosis of accompanied syndromes, fetal treatments start, the decision to terminate or continue pregnancy, and emotional support of the mother are among the cases that remark the significance of the diagnosis of fetal anomalies.