In this study, the Azerbaijani banking sector was researched for the post-COVID19 period. On the other hand, data envelopment analysis method and models were also learned. In this paper, we analyzed the top 10 banks of Azerbaijan in terms of assets for 2021 and as a result of the study, 4 banks are efficient and 6 banks are not. The analysis was carried out using the Data Envelopment Analysis method for the 3rd half of 2021 based on the data of the five largest banks for total assets in the Azerbaijan. In this analysis, we used the CCR (Charnes Cooper Rhodes) model of the Data Envelopment Analysis method with the DEA Solver application. As a result of the analysis, 4 banks were efficiency 6 banks were found to be inefficiency and target points were identified for inefficiency banks.