Modeling methods of data flow model of web-to-print services platform were selected and the top-level data flow model was established. First layer data flow diagrams were established. 2nd layer data flow diagrams were established based on research of each node of the first layer data flow diagrams. The establishment of the data flow model for web-to-print services platform was finally realized. The purpose was to provide basis for the data collection, integration and transmission of web-to-print services platform.