This dissertation consists of essays that study exchange rate pass-through, China’s de facto exchange rate regime, and China’s capital controls. The first essay studies exchange rate pass-through (ERPT) by using a set of data from ten countries including four advanced economies and six Asian emerging markets. The price indices used in this essay include consumer price, producer price, import price and export price indices. While most literature only include the import price index, this essay also puts emphasis on the export price index. It investigates the asymmetry in the ERPT between depreciation and appreciation of domestic currency by using a non-linear OLS model; meanwhile, the short-run and long-run effects of ERPT are also compared with each other. It also detects possible structural change in the ERPT and finds most structural change points are around the Great Recession and Asia financial crisis. Finally, a VAR model is developed to detect the impulse responses of prices to exchange rate shock. The second essay is about China’s exchange rate regime. It has changed a lot since the 2005 reform. It is interesting and important to investigate China’s de facto exchange rate regime with the most recent data. This essay follows Frankel and Wei’s (2008) method, by applying both the basic model and new model with the exchange market pressure (EMP) variable to currency basket for the Chinese yuan exchange rate. I select the US dollar, the Euro, the British pound, the Japanese yen, the Canadian dollar, the Australian dollar and the Russian ruble as component currencies of the basket, based on free floaters, GDP and trade volume. I also add results from a VAR model, considering the endogeneity issue, and the results are consistent with those of OLS. I find the weight of the US dollar declines dramatically and the variation of the Chinese yuan becomes much larger after 2015. This implies that China has been transferring its exchange rate regime from dollar pegged to free floating. The third essay investigates the effectiveness of China’s capital controls. In recent years, after 2014, China’s foreign reserves declined dramatically, from 4 trillion US dollars to 3 trillion US dollars. There was a huge amount of capital outflows from China during 2015 to 2016. This phenomenon lets us reconsider the question: Are China’s capital controls still effective? I will use five methods to measure the effectiveness of China’s capital controls, including de jure indicators, saving-investment correlation test, covered interest rate parity, real interest rate differentials and Edwards-Kahn model. The de jure indicators I use are from Fernández et al. (2016) and Chinn and Ito (2008). I compare China with the US, the UK and Japan in the saving-investment correlation test, and with the Eurozone and Japan in covered interest rate parity, real interest rate differentials and Edwards-Kahn model. Various results indicate that China’s capital controls are still effective.