The study examined land and water transportation networks in Gangjin area and transportation of Gangjin celadon porcelain through the transportation networks. Land and water transportation networks in Gangjin area were blocked by `MyeongRyangHang(鳴梁項)` which is tough place in the sea and mountain areas in Wolchool(月出) mountain. So for sea route, besides Tamjin(耽津) and Mipo (彌浦) in Gangjin bay, Jodongpo(潮東浦) in Yeongam was actively used as an alternative harbor to avoid MyeongRyangHang(鳴梁項). In existing studies, it was understood that nearby Jangheungchang(長興倉) warehouse, one of Jochang(漕倉) is a main transit for transportation of Gangjin celadon porcelain and transportation activity actively used personal and physical basis of Jochang warehouse. But in the aspect of transportation history, it was identified that ship for Gangjin celadon porcelain for tribute started at Jochang warehouse and maybe could start in Mipo(彌浦) near Daeguso(大口所) as well. For Gangjin celadon porcelain, characteristic of celadon porcelain and transportation volume became main elements to decide departure place. Like Taean ship(태안선), large cargo of celadon porcelain preferred Mipo though burden to pass through MyeongRyangHang. Like Mado ship No.1(마도1호선), small cargo of celadon porcelain started in Jodongpo in Yeongam over uphill pass. Thus, at the Daeguso(大口所) which was the largest producer of celadon porcelain in Goryeo, using work force of Bugokmin(部曲民), Gangjin celadon porcelain was transported at not only Jochang warehouse but also Mipo. This is a unique characteristic of Gangjin Daeguso(大口所) different from Buan area which is another production place of celadon porcelain.