The aim of this work is to analyze the factors responsible for RER appreciation in 2000—2006 years in Russia. Particularly, this study empirically evaluates how closely real exchange rate movements are related to movements in the relative price of nontraded to traded goods and to changes in the relative prices of tradable goods across countries in the data. The paper investigates the quarterly sample on Russian data in the period of RER appreciation: 2000.Q1- 2006.Q4. The macro data on price indices, GDP, RER etc. are taken from the official Goskomstat statistics. The central tool of analysis is the variance decomposition. The main hypothesis that is tested is the violation of the law of one price. The analytical papers of Ariel Burstein, Martin Eichenbaum, Sergio Rebelo and also the papers of Caroline Betts and Timothy Kehoe are considered as a basis for research approach in this study.