Abstract: Aiming at solving the problems of lagging business flow, low efficiency, and high error rate in various organizational departments of construction companies, this paper introduces the design and development of fastonline customizationof the business process based on the information system platform. The paper presents the function design, implementation, application, and key technologies of the business process of the information system platformin details.Furthermore, the system realizes the intelligent customization of thefunctional pipeline of various business processes in enterprise, which greatly improves the management level and efficiency by customizing the process to quickly respond to the changing business requirements, and achieves the purpose of efficient office automation online.