《经济学人》每年会发布两次巨无霸指数，从这些数据来分析出人民币和其他汇率之间的关系，分析相比较来说是高估还是低估。本文基于巨无霸指数，在购买力平价基础上比较人民币与其他货币之间的关系。由于巨无霸指数受到多种因素的影响，在实际数据上会有较大偏差，本文结合实际影响巨无霸指数的一些因素，分析巨无霸指数出现偏差的原因。

关键词：巨无霸指数、汇率、购买力平价理论

The Economist published the Big Mac Index twice a year. The index can also be used to analyze the relationship between the CNY and other exchange rates by overvalued or undervalued. Based on the Big Mac Index, this article compares the relationship between the CNY and other currencies based on purchasing power parity. Because the Big Mac Index is affected by many factors, there will be a big deviation from actual data. This article combines some factors that affect the Big Mac Index for the reasons of deviation.

Keywords: Big Mac Index, Exchange Rate, Purchasing Power Parity