The invention discloses a development and test system for a micro-application in a mobile terminal. The development and test system comprises the micro-application, a debugging assistant, a web container, a native module and a browser kernel, the micro application is an offline resource set developed on the basis of HTML, JavaScript and CSS technologies, exists independently, and does not depend on mobile terminal App operation. The debugging assistant is used for directly debugging the micro-application / web page at the mobile terminal, positioning problems and debugging performance; the browser kernel is a rendering kernel borne by the Android end and the iOS end, the iOS end uses a webKit kernel of the system, and the Android end uses a private kernel to replace the browser kernel of thesystem; the web container is designed on the basis of a browser kernel, and micro-application loading rendering and native communication are achieved. According to the method, the problems that native heating is inconvenient to update, native webpage loading is slow, user experience is poor, and developers are difficult to debug at a mobile terminal are solved.