Dabie-Sulu Orogenic belt formed from the collision of Sino-Korean and Yangtze Plates in east China during late Permian and Triassic, the east extension of this Orogenic belt has been a focal issue of attention at home and abroad in the past decade.Because of the complicacy of tectonic geology in Korean Peninsula,the authorities’ opinions divided, approximately in two groups:(1) extended to Imjingang belt or Okcheon belt or “Gyeonggi massif”in Korean Peninsula,(2)didn’t extend to Korean Peninsula.Some subsurface geology and Geophysics data revealed the possible of large gap between the boundaries’ location of surface and subsurface, made the issue much more complex. This article arranged and analyzed abundant research on the distinguish of the Mesozoic Plates’ Boundary in East China-Korean Peninsula. In a conclusion, the comprehensive explanation of geology, geochemistry and Geophysics should be the research objective to figure out this problem in the future.The tectonic relationship between Yellow Sea and the littoral province is the next key research area in China.