Acute Myocardial infarction (AMI) is one of the most fatal diseases of human community. Its incidence is almost 2-3 times more in Indian ethnicity. Electrocardiogram is the most useful and feasible diagnostic tool for the initial evaluation, early risk stratification triage, and guidance of therapy in patients who have chest pain. Myocardial infarction leads to complications like mechanical and electrical abnormalities. Conduction blocks are seen in myocardial infarction, more commonly in Inferior wall infarction because of proximity of conduction system. Aim: This study is undertaken to evaluate various patterns of conduction blocks occurring in Acute myocardial infarction. It also corelates risk factors like diabetes mellitus and site of infarction. Material and methods: 100 cases of Acute myocardial infarction (AMI) admitted in Guru Nanak Dev hospital attached to Govt. Medical College Amritsar were included in this observational study. Results: Among 100 patients, 29 patients (29%) developed conduction blocks. 8 patients (8%) developed first-degree AV block. 7 patients (7%) developed second – degree AV block. 6 patients (6%) developed third-degree AV block. patients (2%) developed left anterior hemiblock (LAHB). 2 patients (2%) developed RBBB and 2 had complete RBBB+LAHB. 1 patient had LBBB and 1 had SA block. Conclusion: Myocardial infarction is common in the age group of 51-60 years. 29% of patients with MI developed conduction blocks. Diabetes and hypertension were significant comorbidities. Mortality is more in patients with conduction blocks when compared to patients without conduction blocks (P = 0.031).