The aim of the study was to determine the possibilities of practical application of electrocardiography (ECG) in the diagnosis of arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) according to the analysis of scientific publications over the past five years in journals indexed by Scopus, Web of Science and PubMed. Analysis has shown that ECG plays an increasingly important role in the diagnosis of ARVD/C. The presence of ECG changes characteristic of the disease (epsilon wave, T wave inversions, QRS complex prolongation in leads aVR and V1) allows diagnosis of ARVD/C in half of the cases without the use of ultrasound and tomography techniques. Electrophysiological disturbances in ARVD/C are registered long before the structural ones. This determines the high value of the ECG for early diagnosis of the disease. The methods of ECG analysis developed in recent years greatly expanded the possibilities of the method in differential diagnosis and prediction of the ARVD/C. The popularization of ECG-methods in diagnosis of ARVD/C among general practitioners is necessary to improve the early detection of such a dangerous disease.