Introduction: Today, heart diseases are the most common mortality causes in many of the worldcountries. According to current statistics, mortality rate from MI have been increased in Iran. The aimof this study was to determine survival rate and its effective cause in MI patients.Material and Methods: This analytical-descriptive study was performed on 800 MI patients inArdabil Bouali hospital. One year follow-up was carried out for all patiens and data collected througha questionnaire. The reliability and validity of questionnaire had been earlier evaluated usingCronbach's alpha in 30 samples pilot study. Data analysis was caried out by statistical methods suchas: Kaplan-Maier for survival rate and log-rank test for comparison survival mean in two groups usingSPSS software. Cox regression model and survival graph was used for predictive effective causes onsurvival rate.Results: Age mean of patients was. For one-year follow-up, mortality rate was 10.5% for allpatients. 72.8% of patients were male and 27.2% female. 47.4% of patient was smoker, 33.4% have aHTN history, 18.1% were diabetic and 15.3% had high lipid. Survival rate in first ten days, first monthand a year following MI was 0.95, 0.93 and 0.91, respectively. Effective causes in patient’s survivalrate were DM, HTN, SK and EF.Discussion: knowing survival rate and effective causes in MI patients, we can provide a betterservice as well as spatially works to control MI and decrease mortality rate from MI and also increasesurvival time in patients.