Taking Chinese Science Citation Database(CSCD) as information source, papers published by 78 re-searchers supported by National Science Fund for Distinguished Young Scholars and Professors engaged as Changjiang Scholar were searched. A total of 6185 papers were obtained. We analyzed citation frequency and collaboration of these pa-pers from three levels, namely, author, subject and institution. The results show that the quantity and quality of CSCD pa-pers published before and after the scientists awarded ( or employed) are significantly lower than that of SCI papers, and the quantity and quality of papers published after the scientists awarded ( or employed) are higher than that of papers before awarded ( or employed) . Cooperation in CSCD papers mainly occurs between members within a small group and domestic institutions. There is a big difference between the subject structures of CSCD papers and SCI papers. The results of this study suggest that the national strategic measures supported for young first-class scientists are effective and can further pro-mote and popularize. Young top scientists should strengthen the breadth and depth of international cooperation. The outflow of high quality papers,to a certain extent, results from the current domestic and international research evaluation system and the limitation of subject structure of Chinese journals themselves, which in turn exacerbate the weakness of Chinese jour-nals.%以中国科学引文数据库( CSCD)为信息源,用被引次数对78位国家杰出青年科学基金获得者和长江学者特聘教授的6185篇CSCD论文进行计量分析,用科学计量学和社会网络分析法从作者、学科和机构等三个层面对其合作关系进行研究。结果显示,我国一流青年生物医学科学家“助聘”前后的论文数量和质量均表现为SCI明显高于CSCD,以中英两种文字发表的论文数量和质量均表现为“助聘”后高于“助聘”前；作者合作以小团体为主,学科合作与SCI论文的相比存在较大结构差异,机构合作以国内单位为主。此结果提示,国家支持一流青年科学家的战略措施得力,可以进一步推进和推广；一流青年科学家的国际合作广度和深度有待加强；高质量论文的外流在一定程度上是当前国内外的科研评价体系和中文期刊自身的学科局限性的结果,反过来加剧了中文期刊的弱势。
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