Ever since their availability in 1924 the archives of the Ming and the Ching Dynasties collected in the court of the Ching Dynasty emperors have become the most important primary historical sources for the studies of the history of the Ming and the Ching Dynasties. However, owing to the modern historical factors such valuable data are now separately stocked by varlous departments on both sides of Taiwan Strait. On the mainland China, aside from those original central-government-level archives of the Ming and the Ching Dynasties kept at the Ching emperors court, the local-government-level and the ciivilian ones available at various locations are also under good mainteance. This article is a brief state-of-art account of the maintenabce of the above-mentioned reiated archives on the mainland China and an evaluation of their historical values for the promotion of the studies of the archives and the history as well as the academic exchange between both sides of Taiwan Strait.