Abstract: According to related proposals about countersignature management work for detailed rules of station and depot of railway administration, aimed at constructing network application system of high efficiency, beauty and safety, the paper put forward the design scheme and implementation method of Contersignature System. The System was developed with NET architecture. The main display module of Web application system was implemented by Ext platform. Through NTKO Office control simulation, the Word type online editing function was implemented. The leading-in and show of electronic signature were realized by Sign Tool control. Thus a complement technology solution was formed.