With remarkable investment into deep water block exploration，subsea production systems are accepted as a mature technology and becoming increasingly employed to develop offshore oil and gas field，especially deep water ones，due to its flexibility and advantages to enhance field recovery. Subsea production system technologies have been developed rapidly and give some new trends. On the general introduction of subsea production system，new trends are given in this paper，furthermore based on the summary of current status of offshore field development and special characteristics of South China Sea，challenges are presented when considering its application in deep water field development in South China Sea. Suggestions are also made to address this situation as well.