Abstract: In order to better understand the origin of plant,phylogenetic differentiation and evolution process of flora,to promote the protection of endemic plants,endemic flora regions in Northeast China were systematically investigated respectively,including the species composition,family structure and genus structure,life-form composition,flora characteristics and geographical distribution.The results showed that:（1）There were 289 species of Chinese endemic plants,109 species of endemic plants of Northeast China,154species of endemic plants of Changbai flora region,16 species of endemic plants of Daxing’anling flora region,10 species of endemic plants of Mongolia steppe flora region and 20 species of endemic plants of Northern China flora region.（2） Among all kinds of endemic plants,herb were the most,and perennial herbs were the most dominant,while trees,shrubs and vines were the less.（3）Chinese endemic plants were densely distributed in Daxing’anling Mountains and Changbai Mountains.（4）The concentrated distribution areas of endemic plants of Northeast China were distributed along the main mountains in Northeast China,indicated that the endemic plants of Northeast China mainly originated from mountains.（5） Changbai flora region had high level of endemism,showed the mature nature of the flora.Daxing’anling flora region,Mongolia steppe flora region and Northern China flora region had low level of endemism,showed the young nature of the flora.（6）Endemic plants of Changbai flora region were densely distributed in Changbai Mountains.The endemic plants of Daxing’anling flora region were evenly distributed,and the endemic plants of Mongolia steppe flora region and the endemic plants of Northern China flora region were scattered.