Abstract: In order to give full play to the important role of data visualization technology in the field of railway big data, this paper analyzed the development status and trend of big data visualization technology, combined with the construction purpose, data source and overall framework of railway data service platform, and used visualization technology and data interaction technology, designed and developed the integrated management cockpit of railway data service platform from five aspects:asset survey visualization, asset overview visualization, shared service visualization, analysis application visualization, operation and maintenance management visualization.The paper also used big data visualization technology to display the railway data service platform in an all-round way, analyzed the change characteristics and evolution laws of data, mined the hidden value of data, provided the functions of comprehensive monitoring, data display and auxiliary decision-making for operation and maintenance personnel, analysts and management personnel visually, solved the problem of rapid positioning and mining potential information from massive and irregular data difficult questions.