This article takes the domestic gateway city Zhaoqing City ,Guangdong Province as an example and selects a number of indicators to build the type of urban competitiveness evaluation index system . It uses the method of principal component analysis to analyze seven elements w hich decides the competitiveness of Zhaoqing . T he seven elements are level of economic development , industrial structure , economic extroversion , the level of social development , infrastructure construction , transportation accessibility and the concentration and diffusion capacity of city . T he results show that the city competitiveness of Zhaoqing steady rises in recent years and has strong sustainability , the economic development support system has the largest contribution to urban competitiveness , otherwise the extroverted degree contribution is smallest . Aiming at the existing problem of the city , we put forward the countermeasures and suggest how to further enhance the comprehensive competitiveness of Zhaoqing w hich can increase investment in infrastructure construction , speed up the industrial transformation and upgrading , lever “two space” , promote the construction of “big Zhaoqing”.%以国内枢纽型门户城市广东省肇庆市为例，选取若干指标，构建该类型城市竞争力评价指标体系，运用主成分分析方法分析了决定肇庆城市竞争力的经济发展水平、产业结构、经济外向度、社会发展水平、基础设施建设、交通通达性、城市集聚扩散能力7大要素。结果表明，近年来肇庆市城市竞争力处于稳步提升的发展状态，具有较强的可持续性，其中经济发展支持系统对城市竞争力贡献度最大，经济外向度贡献最小。针对城市存在的问题，就如何进一步提升肇庆枢纽型门户城市综合竞争力提出了对策建议，即加大基础设施建设投入，加快产业转型与升级，借力“两个空间”，促进“大肇庆”建设。
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