Abstract: This paper make detail discussion on constructing a data transmission of asynchronous AJAX engine which based on XML data exchange, and used the encrypting arithmetic of TEA. Combining with 30th anniversary text & photos broadcast system of Scrtvu, we apply AJAX engine method to realize the browser and live Servers with asynchronous communication, and well solved the obstruction bwtween them. Compared with traditional B/S synchronous mode, adopting AJAX method has picture refurbishing quickly and non-page twinkle characteristic in practice.