In order to improve the design quality and efficiency of the hanger and support in the thermal power plant,the characteristics of the design process of the pipe hanger and support are studied in this paper,and a solution for the digital design of the pipe support hanger is present.Through establish the logic rules and algorithms to automatically identify the rooting conditions of the hanger and support,combined with the selection requirements of common hanger and supports in thermal power plants,the 3D digital design of pipe supports and hangers was successfully realized with redeveloping plug-in on plant design management system (PDMS) software platform,improved the process of digital design.