Abstract: In order to solve the problems of large rigidity of umbilical cables, high requirement of bending radius, poor control of construction routing accuracy, restricted space for casting the remaining cable and difficult to install umbilical termination head (UTH) accurately, high-precision positioning system, simulation and other technical means were introduced, and enhancement effect of the above technical means on construction accuracy and installation stability of umbilical cable was analyzed in detail through theoretical verification and engineering practice. Results showed that after application of above technologies, laying deviation of umbilical cables was controlled within ± 5 cm, which significantly improved positioning accuracy of construction and effectively reduced damage rate of umbilical cables, and ensured operation safety and long-term reliability of umbilical cable system. In summary, the proposed comprehensive technical strategy for umbilical cable installation simultaneously could improve construction accuracy and efficiency, significantly enhance safety and reliability of umbilical cable laying, and provide practical experience and technical examples for similar umbilical cable laying projects.