The invention relates to an on-line management method for an engineering project. According to the on-line management method for the engineering project, based on a remote interaction platform, through data transmission and data processing between a budget end computer device, a plurality of contracting enterprise end computer devices, a plurality of evaluation end computer devices, an application end computer device, a plurality of submission end computer devices, a plurality of checking end computer devices and a server end computer system, on-line bidding and tendering and bid evaluation of the engineering project are achieved, and on-line evaluation and on-line making of an engineering project progress plan of a contracting enterprise of the engineering project, on-line tracking of engineering project progress completion conditions, response and management of engineering project progress abnormal conditions, on-line generation of an engineering project quality acceptance report form, one-line application for engineering project progress payment, and on-line generation of engineering project budget by material and labor cost analysis are achieved.