Coronary artery diseases are one of the important health problems in the world, although considerable progresses have been made to decrease the mortality, they are still the first cause of death in many countries. One of the most effective factors on patients’ mortality is the interval between pain onset time and referring to hospital. This is a cross sectional study in which 213 patients were examined who had been diagnosed to have heart failure. Data gathering took 18 months. Data gathering tool was a designed checklist which was filled up by an experienced nurse during interview and obtained results were recorded in files. Results of the study showed that 70% of patients were women and only 30% were men. 48% of them were illiterate and patients age mean and standard deviation was 58.3 ± 12.6. The mean ± SD of pain onset time till referring to hospital was 12.1 ± 2.1. Statistical tests showed a significant correlation between sex and the mean of referring time (P<0.05) but the relation between age and referring time was not significant. Obtained results of the study indicated a considerable delay in patients referring to hospital regarding this point that the best effect of drugs is in the first 30 minutes of chest pain and the most mortality rate also happens in the first hours thus based on these results it is necessary to pay attention to chest pain and to provide public training and instruction to cope with it.