In the favorable background of the Belt and Road Initiative, the aquatic products trade between China and ASEAN is facing a historic opportunity. In order to make guidance of transformation for the aquaculture enterprises, this article thoroughly make static and dynamic analyses on the situation of intra-industry trade of aquatic products between China and ASEAN based on the HS classification, by calculating the Grubel-Lloyd Intra-Industry Trade Index, Bruelhart Marginal Intra-Industry Trade Index and Thom-McDowell Horizontal and Vertical Intra-Industry Trade Index successively. The results show the intra-industry trade of aquatic products between China and ASEAN is mainly of vertical and is mainly derived from the difference of resource endowment.