In addition to selecting excellent papers from a wealth of manuscripts, the editorial department also organized a number of high-level papers from domestic key universities and scientific research units such as Tsinghua University, Zhejiang University, Harbin Institute of Technology, Xi Jiaotong University, Shanghai Jiaotong University, Chongqing University and Tianjin University, as well as the State Key Laboratory of Mechanical Transmission, the State CIMS Engineering Technology Research Center, the State Key Laboratory of Fluid Transmission and Control, and the State Key Laboratory of Tribology. Most of these papers are supported by the National Natural Science Foundation and national, provincial (ministerial) key research projects, which greatly improves the first reporting rate of major information of this major or discipline in Journal of Mechanical Engineering and becomes the core journal of machinery and mechanical discipline. According to the Summary of China Core Journals 19 1 published by Peking University Publishing House in September, 42 journals in machinery and instrument industry 1 were identified as core journals, and Journal of Mechanical Engineering was among them. Journal of Mechanical Engineering also occupies a place in the core journals of mechanics. 50.0% of the papers published in Journal of Mechanical Engineering 1996 were funded by the National Natural Science Foundation, and 63.3% of the papers published in 1997 and 1998 were funded by the National Natural Science Foundation (according to the statistics on the first page of each published article). Most of the papers published in Journal of Mechanical Engineering have reached the international and domestic advanced level, which has become one of the important bases for evaluating doctoral programs, evaluating state key laboratories, applying for national natural science foundation, reporting scientific research achievements and promoting professional titles. According to the statistics of the paper effect reflection table, 62.2% of the papers published in Journal of Mechanical Engineering were awarded by the state and provincial and ministerial units.