Abstract: We mainly summarize the technical principle and parameters of helico-axial multiphase boosting technology, twin screw multiphase boosting technology, contra-rotating multiphase boosting technology, etc., and analyze the characteristics and application status of them. Meanwhile, the difficulties of subsea multiphase boosting technology at present, including the adaptability of liquid fluctuation conditions, the restriction of long distance power supply technology, subsea installation challenges, reliability of new technology, and reliability of the integrated equipment, are analyzed. This work will provide reference and technical supports for the application of the subsea multiphase boosting technology in subsea oil and gas field development.