Large commercial banking group encounters many problems in the process of informatization,such as large number of internal systems,existence of many non-uniform platforms,low usage of resources and high cost,long cycle of demand response and other defects.With the rapid growth of China's banking industry,commercial banking group's system architecture innovation is imperative.This article focuses on the SOA-based framework and component-based design method which are employed in the construction of the new generation banking system.By 7+1 levels and 12P overall framework design,we ensure the application components loosely coupled and uniform the domestic and overseas application to realize the enterprise-wide integration of resources and quick response to business requirements.Accordingly,we achieve the purpose of enhancing the service reliability and availability.We introduce in enterprise level business model to standardize our business process and use structured modelling language to describe our business capability.We use process model,product model,data model and user experience model to provide methods and basis for enterprise level analysis and design.