The visual programming in embedded application development has become a trend at present, this paper presents a universal visual embedded application development platform. Application developers can develop application through visual programming in the platform, which make them free from cumbersome manual coding, then they can focus on the research of business logic. At the same time, this platform is universal, it is neither restricted to hardware platform nor restricted to application type. As it can expand the supported hardware platform and component library flexibly, it can be used to develop application of various kinds of business types in various kinds of hardware platform. Finally, we demonstrate the development process of embedded application in this platform through an example of over-current protection.