Based on the traffic data in 2005 and 2018，this report used the complex network analysis method and the shortest travel time method to analyze the topological accessibility and temporal accessibility of land transportation（road and railway）in Northeast China. The study found that，compared with 2005，the accessibility of land transportation in Northeast China in 2018 has been greatly improved，but the spatial distribution still shows an obvious “core-edge” distribution pattern. Finally，policy suggestions were put forward from two aspects：continuing to increase investment in land transportation infrastructure and promoting the integrated development of land transportation network in Northeast China.