Abstract: For the control of subsea production system (SPS), the technical characteristics of the all-electric subsea control system are discussed and analyzed from different aspects such as the system structure, communication and power supply approach, valve structure, functional adaptability, etc. In combination with the engineering experience, the advantages and disadvantages of all-electric control system and the widely used multiplex electro-hydraulics control system are compared. This research will provide reference for the research and development of all-electric subsea control system in China.