[目的/意义] 研究“985”“211”高校之间科研合作的现状，能够推进“2011计划”更好地实施。[方法/过程] 以CNKI(中国知网)作为数据来源，查找2004-2014年国家自然科学基金支持的论文合著数据，运用社会网络分析的方法，对“985”“211”高校之间的论文合著情况进行研究。[结果/结论] 在116所高校中，清华大学的程度中心性是最高的，说明其处于最重要的位置；地理位置与空间距离对于高校之间科研合作联系的紧密性影响很大；学科交叉或相似的高校联系的比较紧密；“985”高校发表的论文数量多，而且其之间的合作也较为紧密。

[Purpose/significance] Studying the current situation of scientific research cooperation between “985” and “211” universities, can promote the implementation of the “2011 Plan” . [Method/process] Based on all the data of CNKI (China National Knowledge Infrastructure) as the data source, we searched for co-authored data supported by the Chinese Natural Science Fund from 2004 to 2014. We applied the social network analysis to make a research on the cooperative study between “985” and “211” colleges and universities, including the cooperation network degree centrality, the mediation centrality and the network condensing subgroup analysis. [Result/conclusion] The degree of Tsinghua University centrality is the highest in 116 colleges and universities, which illustrates its position as the most important university. The geographical location and the spatial distance have great influence for tightness in the collaboration relationship between colleges and universities. Secondly, the colleges with overlapping or similar disciplines contact more closely. The number of papers published by “985” colleges and universities is more and the cooperation between “985” colleges and universities is also very close.