Up to now, the regional relations between Korean Peninsulaand the westem Japan have been focused on the timesince Yayoi Period and the region of the southern Korean Peninsulaand the northwestern Kyusyu. It is viewed as the result of the undervaluation of the then existing various relationship between them. Therefore, I examined the broad area of Korean Peninsula and the western Japan through final Jomon to initial Yayoi.
I analyzed parallel relationship and cultural aspect between Korea and Japan, especially Double-limed Pottery, Rim-holed Pottery, Pottery with a Notched Raised Band, Red-Burnished Pottery, and Continental Assemblage of Stone Tools. As a result, it could be found that the southern Korean Peninsula and the western Japan-Sanin region, the northern Kyusyu region, central Setouti and the northwestern Kyusyu-are diversely related. Yayoi culture was actually formed from the previous regional relations of them, and from then on, it began to be clear many phases of the link between the southern Korean Peninsula and the northwestern Kyusyu.
Meanwhile, the regional link was different before and after the formation of Yayoi culture. The former had a separate and occasional relation while the latter had a simultaneous and manifold one. But, the features of the culture of the Pottery with a Notched Raised Band and Yayoi culture which built the network of the western Japan are not due to only result from the amount of external factors. It is believed that there were many mixed factors such as resident's correspondence to the continual implication from Korean peninsula, internal necessity, contemporaneousness of the eastern Asia.