Office reporting technology is one of the important contents when we develop enterprise information system based on B/S. But in B/S system the application can't get good development due to the restrains of Office's platform and environment. This paper puts forward a method to create a model based on reporting technology in view of AJAX and this model inherits a variety of advantages of traditional reporting technologies. And through its feature of asynchronous communication, this technology realizes the asynchronous visualization reporting generation process, which greatly improves the user's experience. At the same time, this model uses AJAX technology to solve the data access security problems which exist in traditional office reporting technology based on ActiveX. The asynchronous-report-drawing technology provides a new model to achieve the report programming based on Web.