Majority of the Indian banking sectors face a main challenge of NPA’s. Therefore, the Government of India, come up with the solution of merger of banks. Hence 2017 onwards merger of banks came into existence in the banking field. But, unfortunately merger of banks is not a new term. In India merger of banks began in the year 1960’s. But it was popularized after 2017. In 2017, SBI merged with its five associated banks- State bank of Bikaner and Jaipur, SBM, SBT, State bank of Hyderabad, State bank of Patiala along with Bharatiya Mahila Bank. After that till 2021, many banks have merged. Hence this study was conducted to study the pros and cons of merger of banks, its impact on customers as well as employees and to know the different merger of banks.