The Japanese metal money discovered in Vietnam is an important issue in the study of diplomatic, economic and cultural relations between the two countries in the Pre-Modern and Early Modern Eras. Along with ceramics and other relics, they are authentic evidence for Vietnam - Japan exchanges in the past; as well as affirming the presence of Japanese imprints in foreign countries through history.

In this paper, we attempt to make an overall, comprehensive history of space and time and the content system of the theme of Japanese metal money in Vietnam. We will update the newly discovered coins during these recent years, supplement a thorough review of literature on studies of ancient coins and monetary history of Vietnam, contribute the most updated research findings about trading ports and the presence of the Japanese in the Northern Vietnam during the Early Modern period, and generalize the issue of Japanese metal money found in Vietnam through historical perspectives.