增加值是反映高新技术产业“高产出”的重要指标,而增加值率作为增加值占总产值的比率,其大与小意味着高新技术产业增长质量的优与劣.通过分析美国、日本、韩国三国高新技术产业增加值率的变化特点,以及影响这些变化的作用因素,发现高新技术产业增加值率下降是客观规律使然,产业结构和产业创新能力是影响高新技术产业增加值率的关键因素,但产业革命和技术变革可提升增加值率,经济危机则相反.最后,提出有针对性的启示与建议,为我国加快发展高新技术产业、培育发展战略性新兴产业提供有益参考.%The added value is an important indicator to reflect " high output" of high - tech industry. Value added rate as the increase in value of total output value ratio, means the superiority or inferiority of the growth quality of high - tech industry. Through the analysis of the United States, Japan, South Korea's high - tech industry value added rate on the characteristics and the impact of these changes on the factors, we found that the decline of high - tech industry value added rate follows the objective law, and the industrial structure and industrial innovation capacity are the key factors that affect the high - tech industry value added rate. But the industrial revolution and technological change can enhance the value added rate, and the economic crisis is restricting the value added rate enhancement. Finally, we propose targeted revelations and provide a useful reference for China to accelerate the development of high - tech industry and foster the development of strategic emerging industry.
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