Ecommerce online trading is a growing business sector in Bangladesh. So, Online payment gateway or payment method is being so important in Bangladesh. Ecommerce online payment gateway system is hassles less due to carry hand cash. Every online shop or ecommerce store need Online payment method to make secure transaction. Also Merchants are using mobile payment system. The mobile payment gateway are bKash online Payment, IBBL mcash mobile payment, Duch Bangla Bank Mobile Banking etc.