The invention discloses a financial management and risk management and control system for an extra-high voltage power transmission project. The financial management and risk management and control system comprises a first step that the management and control system comprises four transnational high-voltage project financial management modes including a reimbursement type financial management mode,a turn-key financial management mode, a mixed financial management mode and a conventional financial management mode to improve a traditional overseas power engineering financial management system; asecond step of establishing an extra-high-voltage engineering financial management risk library, constructing a full-process, full-main body and a full-professional risk identifying matrix to identify the financial management risk of the extra-high-voltage engineering project; a third step of constructing a three-dimensional risk management and control system of the extra-high-voltage project, constructing a comprehensive risk control system comprising three dimensions, and providing a risk control measure, with the cutting points each stage in the whole process as tangent planes.