As a promising clean energy source, offshore wind power is of great significance to the realization of dual-carbon goals. Submarine cable, as a channel line connecting the onshore centralized control center and the offshore booster station, is an important part of the offshore facilities, and is extremely important for the stable operation of wind farms. The complex and changeable Marine environment brings many difficulties and challenges to the operation and maintenance of submarine power cables. Based on the operation and maintenance data of submarine power cable,this paper summarizes the research progress of data-driven condition monitoring and fault diagnosis technologies for submarine cable. Firstly, based on SCADA data analyze the condition monitoring and fault diagnosis method of submarine cable SCADA system.Secondly, study the state monitoring and fault diagnosis method of temperature, stress and vibration data based on submarine cable composite optical fiber sensing technology.In the end, study the condition monitoring and fault diagnosis method of sea-surface monitoring image data and underwater acoustic and light image data based on image data recognition technology.