中文摘要：

运用经济地理学中测度区域经济差异的指标，对淮海经济区近10年的入境旅游规模差异进行分析。研究发现，淮海经济区入境旅游规模的绝对差异和相对差异基本上呈逐年上升趋势，区域旅游规模发展差异较大，早期首位分布不明显，但后期表现明显。为进一步探讨淮海经济区入境旅游规模差异的原因，该研究运用城市地理学中的位序一规模法则，通过回归分析对淮海经济区入境旅游规模体系进行研究。结果表明，淮海经济区入境旅游规模符合位序一规模分布，入境旅游规模开始逐渐呈首位型发展，入境旅游规模分散均衡程度低，部分城市存在高度垄断现象。此外，在最后指出了本研究的局限性、不足之处和今后的主要研究方向。

英文摘要：

Based on some indexes which were used to measure the differences of regional economic development, this paper analyzed the disparity of inbound tourism revenue in Huaihai Economic District in the past ten years. It was concluded that there was an upward trend in both absolute and relative disparity of the tourism size in Huaihai Economic District and there was a great difference in regional tourism development. In early times, it was not obvious of the first distribution, but it had a centralized trend later. In order to study the reason for the disparity of tourism size development further, this paper used the rank- size rule of urban geography and regression analysis. The result showed that the inbound tourism size of Huaihai Economic District met the rank - size rule, and the balance degree of inbound tourism was low and regional monopoly phenomenon still existed. In the end, the limits of this study and what we should research on further later were also pointed out.