Abstract To make the analysis of seismic precursory information more convenient, this article uses the JavaScript language to create seismic graph page, all pages are generated by the C# program automatically. For the program connecting to the database,it checks data updating every 30 minutes automatically, updating and drawing in realtime. The page contains precursor data at all stations,and they are classified. When you click the hot spot of a station on the distribution of stations, the recent precursor observation curve will be shown in the form of a web page. Meanwhile, the value of each observation component of each station is arranged in tabular form below the station distribution map, which contains the observation curves of the last one day, two days, one week, two weeks, a month and observation data downloading of the last month. When the user puts the mouse on any point in the graph,the corresponding coordinate values of this point will display on the screen and all curves pages can be saved to local use.
