Abstract: The northern part of Tanlu fault zone in NE China can be mainly subdivided into three faults of NE-NNE strike. They are Shenyang - Changchun - Harbin fault, Yilan - Yitong fault and Dunhua - Mishan fault from west to east. The faults have different tectonic background and dynamics in different periods. We find that these faults have five periods in tectonic regime transformation. 1 ） Extension mainly during Early-Middle Jurassic period, resuiting in a series of down-faulted basins or sunken basins, accompanied with intermediate-acidic magmatic intrusions and eruptions, forming special volcano-lake sedimentation basins; 2） Compression in NW-SE direction in Early Cretaceous period, resulting in NE trending thrusting nappe of Middle-Late Jurassic strata in basins ; 3 ） Leftlateral shear in Late Cretaceous period, leading to folding of Jurassic and Early Cretaceous sediments, which are unconformable with upper layers; 4 ） Extension in NW-SE direction in Eogene Period. Japan Sea pulled open in Eogene and completed as the patterns as nowadays in Neocene period; 5） Compression in NW-SE direction in Neocene Period, making Neocene sediments folding slightly.