In this study, efficiency measurement and productivity growth comparisons has been investigated at Melli Bank branches in Kerman province using data envelopment analysis during the years of 1389 to 1391. according to the ranking of banks, To achieve this goal, Different branches Were classified into four groups Include group 1; Grade one and Two branches, group 2; consisted of grade three branches, group 3, consisted of grade four, Group 4 consisted of branches grade 5 and 6.Andthen, the measure of efficiency and productivity growth of branches in each group were calculated. The results show that average productivity growth for branches in groups of one, two, three and four respectively is -6,-9,-8 and -1 During the study years. As well as, the average technical efficiency with input-oriented approach and the assumption of variable returns to scale for branches in groups of one, two, three and four respectively is 99, 77, 87, and 91 percent. In other words, the reform of management practices on the appropriate combination of inputs could have the reduction of 1%, 23%, 13% and 9% in the use of inputs in four groups with the current level output of branches. The results of the analysis returns to scale show that in quad branches, respectively, 50, 80, 63 and 65% of the branches have increasing returns to scale, which indicates that, the majority Melli Bank branches in Kerman province must raise their production capacity to reduce the inefficiency of scale.