Traditional deep sea gas field development engineering mode is to lay submarine pipelines for transporting products from gas field to the land. Such factors as water depth, submarine topography, technical feasibility and economic benefits may limit its application in deepwater gas field development. Combination of floating liquefied natural gas (FLNG) facility or compressed natural gas (CNG) ship and offshore gas production facilities can be used as new type of marine gas field development engineering mode and industrγ insiders are giving more and more importance and attention to such new type of development mode due to its such advantages as relatively low investment, short construction period, good maneuverability and wide range of target market. Reviewed is the general situation of FLNG facility and CNG ship technology development, analyzed are characteristics of three kinds of models suitable for deep gas field development and summarized are reference conditions for selection and optimization of deep sea gas field development models. The new deepwater gas field development technology represented by FLNG facility and CNG ship will certainly break traditional deepwater gas field development engineering model and become an important milestone in the development of offshore gas field development technology.