本文构建了综合G-L指数与人均收入差异（DGNI）、经济规模（AGDP）、贸易平衡度（TB）和市场开放度（OPEN）的多元线性回归模型，发现中国与“21世纪海上丝绸之路”国家水产品产业内贸易水平与经济规模（AGDP）、贸易平衡度（TB）和市场开放度（OPEN）指标呈正相关，但与人均收入差异（DGNI）呈负相关。从长远来看，产业内贸易水平的提高需要不断提高贸易的开放程度，并密切关注进口国水产品相关技术标准的动态变化。最后，探讨了“21世纪海上丝绸之路”国家与中国水产品产业内贸易存在的问题，进而从促进水产品贸易新旧动能转换、提高水产品贸易企业竞争优势、开拓水产品贸易市场交易网络等方面提出具体的政策建议。
This paper constructs the multiple linear regression model of the G-L index and the per capita income difference（DGNI），the economic scale（AGDP），the trade balance（TB）and the market opening degree（OPEN），and finds that the trade level and the economic scale（AGDP）of China and the “Twenty-first Century Maritime Silk Road” national aquatic product industry（AGDP）are flat. TB has a positive correlation with the market opening degree（OPEN），but it has a negative correlation with the per capita income difference（DGNI）. In the long run，the increase of intra industry trade level needs to improve the openness of trade，and closely pay close attention to the dynamic changes in the related technical standards of aquatic products in the importing countries. Finally，the problems of intra industry trade between China and China’s aquatic products in the “Twenty-first Century Maritime Silk Road” are discussed. Furthermore，it puts forward specific policy suggestions from the aspects of promoting the transformation of the new and old kinetic energy of aquatic products trade，improving the competitive advantage of the aquatic products trade enterprises and opening up the trade network of the aquatic products trade market.
