摘  要：长期以来,在接触测温学、非接触测温学和辐射度学领域对铜凝固点（1084.62℃）以上高性能温度固定点有着迫切的需求。随着高温金属（碳化物）-碳共晶熔点的发现，这个需求将很快得到满足。本文简要介绍了高温金属（碳化物）-碳共晶固定点的国际研究计划，这个研究的目的是用新的定义替代当前温标ITS-90在银点（961.78℃）以上的定义，使不确定度比当前温标低5-10倍。   关键词：ITS-90；温标；高温固定点；金属-碳共晶点；辐射测温法；校准；复现性；不确定度   中图分类号：TB942  文献标识码：A  文章编号：1672-4984（2007）04-0016-04   Trend and development of international research for high temperature fixed-points CHEN Gui-sheng （National Institute of Measurement and Testing Technologe，Chengdu 610021，China） Abstract: There has been an urgent requirement for high performance fixed-point above the copper freezing point(1084.62℃),in contact thermometry， non-contact thermometry and radiometry for a long term. With the discovery of high temperature metal (carbide)-carbon (M(C)-C) eutectic melting points, this requirement will soon be met. This paper briefly introduced the research project for high temperature metal (carbide)-carbon (M(C)-C) eutectic fixed-points in the world. The purpose of the research is to substitute the current definition of ITS-90 above the silver point(961.78℃) with a new definition, make uncertainty 5-10 times lower than present temperature scale.   Key words: ITS-90； Temperature scale; High performance fixed-point; Metal-carbon（M-C） eutectic points;  Radiation thermometry; Calibration; Reproducibility; Uncertainty