In order to solve the problem of SVG interface’s slow interaction rate of real-time data and low processing efficiency of real-time information in distributed monitoring applications, a new technology scheme for distributed monitoring SVG interface refreshment of distributed network based on real-time Ajax data engine is studied. From real-time information interaction, real-time Ajax data engine and dynamic refresh control of scalable vector graphics to structure design of switching data and analog data, the key implementation methods for partial refreshment of Ajax data engine and SVG graphic element are given. Take the monitoring interface of distribution network as an example for doing interactive tests of analog quantity and state quantity, which realize SVG partial refreshment of monitoring interface. Tests result for graphic element data show that the refresh delay of SVG interface is about one hundred milliseconds, verifying the fast refresh processing validity of real time data engine in distributed monitoring interface. This work is supported by National Natural Science Foundation of China (No. 51267005 and No. 51567008).