Nineteen cases of fetal arrhythmia discovered by antenatal auscultation were analyzed. Among them, 14 alive babies were followed up. The occurrence, diagnosis and prognosis of fetal arrhythmia were discussed. 14 cases had normal FHR with arrhythmia, 1 case with tachycardia, 4 with bradycardia. Ultrasonocardiography (USC) was performed in 12 cases. 3 of them had sinus bradycardia with structural abnormalities of heart, they showed fetal distress in labor, neonatal asphyxia and perinatal death. 14 cases were followed up for a period of less than one year to 5 years. Only 2 babies had aurical premature beat by USC, others remain normal.