The current study aimed to investigate the family-work conflict in Tejarat bank branches of Kerman and its relation with organizational commitment of the staffs. Family-work conflicts are including behavior-based conflict, time conflict, strain-based and organizational commitment dimensions are emotional commitment, continuous commitment and normative commitment. The study population of the present study was all the staffs of Tejarat Bank of Kerman town. The numbers of the branches were 26 with sample size 295. The sampling was done by Cochran‟s formula and the sample size was 169. The data collection instrument of the study was two questionnaires of family-work conflict and organizational commitment and the validity and reliability of the questionnaire were family-work were 0.82, 0.86 and the validity and reliability of organizational commitment was 0.86, 0.84. For the data analysis via the questionnaires, different tables of frequency distribution, charts, the coefficient of determination (r2), median, mean, Pearson correlation test, independence test and etc were applied and all the study analyses were done by SPSS software. The data analysis showed that by the increase of the scores of family-work conflict as (behavior-based conflict, time conflict, strain-based), the organizational commitment scores of the staffs were reduced and it showed a reverse relation between two variabsles. As the results of the study showed, there was a significant relation between family-work conflict and organizational commitment of the staffs of Tejarat Bank of Kerman. The more the family-work conflict, the less the organizational commitment. Thus, some recommendations were presented for the guidance of the organizational managers.