Armours and Helmets from Samyeon and Goguryeo are very important for the study of armours and helmets in Northeast Asia. These are also evaluated to have a significant impact on the establishment of the armours and helmets culture on the Korean Peninsula, while filling the gap in real armours and helmets from the Later Han period of China. However, compared to the importance, studies targeting only them were somewhat insufficient. In particular, the evaluation of the data was not strictly conducted, such as the part of use of scales according to the scales classification was not properly determined.
In this paper, first, the scales was classified, and then the part of use was estimated according to the classification scales. Based on the characteristics of the scales, it can be seen that in the 3rd quarter of the 4th century at the latest, their own armor was produced by actively accepting the technology of the Jungwon area based on their own manufacturing technology. In the case of Goguryeo, it was greatly influenced by the manufacturing technology of armours and helmets before the 3rd quarter of the 4th century, but in the 3rd quarter of the 4th century, it created its own technology system based on the manufacturing technology of armours and helmets. Prior to the 5th century, there was already an independent technology system for making armours and helmets in Jeonyeon and Goguryeo, and it seems that polarization in the manufacturing technology of the two countries intensified in the 3rd quarter of the 4th century.
On the other hand, due to problems such as unknown excavation status of armours and helmets of Goguryeo, this study attempted to compare the composition of the armours and helmets of Jeonyeon by referring to Goguryeo tomb murals. Through this, it was confirmed that there was a possibility of hierarchical difference according to the composition of armours and helmets. In addition, it was found that gorget and thigh armor were developed for heavy cavalry, and ordinary infantry were not dressed.
In the 4th and 5th centuries, it was found that both Jeonyeon and Goguryeo actively embraced the manufacturing technology of the surrounding areas and created their own manufacturing technology, which spread to the surrounding areas again.