From China to ��ussia��Tan-Lu fault system stretches for thousands of kilometers��towards NE 30°�� The authors have collected more than ten magnetotelluric profile that China and ��ussia have carried out��in the studied area of the Tan-Lu fault's northern section��and have analyzed electrical characteristics of the relevant profiles�� Deriving the following conclusions: ( 1) Jiamusi-Bureya plots��etc����demonstrate the high resistance of Kernel; ( 2) Fold belt attributed to the land showed high and low resistance stitching��associated with not only terrane accretion��but also upper mantle upwelling; below the sedimentary basin��the resistivity of the upper mantle is lower and closer to the surface comparing with the adjacent area( 100-150) ; ( 3) In the system of Tan-Lu fracture��Yishu and Dunmi fracture��etc�� are expressed as vertical low-resistivity zone; ( 4) There may exist subducted old-fashioned piece under Jiamusi and Bureya plots��