Developing Chinese subsea production facilities is one of the major strategies of the nation’s exploration and development of deep-water oil and gas. The subsea connector is the key connection equipment of subsea production systems. Based on the structural functions and application features of subsea connectors, the common technical problems are presented here. The key technologies needed to be studied for developing Chinese subsea connectors are discussed around the four aspects of sealing technology, locking technology, alignment technology and hydraulic control technology. The key sealing and locking technologies are outlined. The unsolved technical issues are summarized and suggestions for some related solutions are proposed.