Abstract: Central and Eastern European Countries (CEEC) is a major gateway in the implementation of the Belt and Road Initiative in Europe. Scientific research cooperation has become an important part of China-CEEC cooperation. In order to provide referential basis for improving the level of China-CEEC scientific research cooperation, based on the data of China-CEEC co-authorship papers in InCites database from 2011 to 2020, using the methods of bibliometrics and data statistics, this paper analyzes the number, cooperative countries, cooperative disciplines and cooperative institutions of China-CEEC co-authorship papers. The development trend of China-CEEC scientific research cooperation from 2011 to 2020 is revealed, and suggestions for further deepening cooperation are provided. The results show that China-CEEC scientific research cooperation presents the following characteristics. 1) The scale has grown steadily, but the cooperative degree among CEEC countries has significant differences, presenting an echelon distribution with Poland ranks first. 2) The cooperative disciplines are mainly science disciplines. Among the seven main cooperative disciplines, there are four science disciplines, two medical disciplines and one engineering discipline. There is a high degree of similarity in cooperative disciplines among CEEC countries. Physics and Astronomy are the main cooperative disciplines. Five disciplines, including Clinical Medicine, Chemistry, Materials Science and Engineering, Biology and Basic Medicine, are hot cooperative disciplines. 3) The main cooperative institutions are concentrated in universities and institutes with strong scientific research strength in China and CEEC, mainly in universities. The cooperation among Chinese institutions is not balanced. The top five cooperative institutions in China are Tsinghua University, Peking University, Institute of High Energy Physics, University of Chinese Academy of Sciences and University of Science and Technology of China. It is suggested to strengthen and expand the scale of China-CEEC scientific research cooperation, pay attention to complementary advantages and expand the cooperative disciplines of China-CEEC scientific research cooperation, and strengthen coordinated development and improve the participation of various Chinese institutions in China-CEEC scientific research cooperation. 

Key words: Central and Eastern European Countries, International Co-Authorship Papers, Scientific Research Cooperation, Bibliometric