In this paper, a data source of dynamic platform based on LabWindows/CVI is introduced and the motion characteristics of the motion platform simulated by the data source is elaborated, the motion model is selected and simplified, the usage scenarios and significance of the data source are analyzed. Finally, this paper introduces how to use the tool LabWindows/CVI to realize the dynamic data source. The data source model has simple structure, low requirements to the running environment, and supports network communication based UDP protocol.