Abstract: According to the exposure markers of the low-grade metamorphic accretionary complex in the north margin of the Dabie—Sulu orogenic belt and the Triassic low-grade metamorphic accretionary complex in the eastern Jilin and Heilongjiang Provinces，we believe that the suture zone of the plate subduction in Dabie region is the Xinyang—Shucheng fault，and that in Sulu region is the Tanlu—Yalujiang fault．Meanwhile，the Sulu orogenic belt extends into eastern Jilin and Heilongiiang Provinces, and the eastward extension part of the tectonic suture zone between the No China plate and South China plate is the Tanlu—Yalujiang—Tumenjiang—Yanji faults．Based on the above discussion．we put forward a continuous subduction-accretionary model in east Asia since the Triassic：(1)A spot collision between South and No China plates took place at the southward extension part of North China plate in the Triassic．then the South China plate was transformed from spot collision into revolving amalgamation toward both sides which resulted in forming accretionary complex．(2)Following the Triassic collision，with Pacific plate subduction and continuous accumulation towards Eurasian plate in the Jurassic—Cenozoic，the huge accretionary complex belt was eventually formed ．