By introducing the basic theory of location entropy analysis, this paper introduced the specific theory and formula of this method, and combined the analysis of the proportion of industry to carry an empirical analysis of Haikou city. Based on the results,this paper defined the advantage industries and the pillar industries of Haikou city and it is of great significance to accelerate the development and enhance competitiveness of industry of Haikou city.%通过对区位熵分析方法的理论基础介绍，引出具体的区位熵的理论和计算公式，并结合行业比重的分析方法，以海南海口市为对象进行实证分析．根据分析的结果，确定了海口市的优势工业产业和支柱产业，为加速海口市工业产业的发展，提升竞争力提供参考．
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