1.0 Introduction  引言
 

During the Asian Financial Crisis in 2007, the Chinese government was keeping the exchange rate of RMB under the huge pressure so that gaining the praise from all over the world. But, the Chinese government was facing with the international pressure about increasing in value. After July 2005, the Chinese government began to implement floating exchange rate system based on the supply and demand of the financial market, so that the economic impact of exchange rate appreciation has already emerged.

2007年亞洲金融危機期間，中國政府在巨大的壓力下保持人民幣匯率的穩定，獲得了來自世界各地的一致好評。但是，中國政府正面臨著與對價值增加的國際壓力。 2005年7月后，中國政府開始根據金融市場的供給和需求來實現的浮動匯率制度，匯率升值對經濟的影響已經出現了。
 

There are two modes on the influence of exchange rate for the export, which include the appreciation or depreciation of the exchange rate or the exchange rate risk. The depreciation of exchange rate can reduce the price of export product, which may stimulate the capacity of export for increasing so that it can enhance the foreign income of export country. On the other hand, the export country can maintain the international market quotient by reducing the price of export product using the pricing right. For the exchange rate risk, it may beat the enthusiasm of the export traders; as a result of the exchange rate risk can bring the negative effect for export by increasing the venture profit. Therefore, there are two research questions of this study for indicating the economic impact of exchange rate risk on Chinese commercial service trade.

有兩種出口模式對匯率有影響，其中包括匯率的升值或貶值或匯率風險。匯率的貶值可以降低出口產品的價格，這可能會刺激出口能力增加，以便它可以提高出口國的國外收入。在另一方面，出口國可以通過降低出口產品的價格使用定價權保持國際市場商。對于匯率風險，它可能會擊敗出口貿易商的積極性;作為匯率風險的結果可以通過增加企業利潤帶來負面影響。因此，本研究的用于指示的匯率風險對中國商業服務貿易對經濟的影響的兩個問題的研究。
 

2.0 Literature Review  文獻回顧
 

Until now, there are lots of achievements on the study of the relationship between the exchange rate changing and the international trade all over the world.

 

2.1 The Impact of Exchange Rate Changing on Export

The relationship between the exchange rate changing and export is fine-spun. Guittian (1976) has already pointed out that the exchange rate floating can blaze a way in the direction and number of the supply and demand, so that it can accelerate the success of international business by satisfying the of the ability of domestic increasing production overseas excess demand. And, Megda, et al (2007) indicated that the combination of supply and demand decides that the final impact on the number and price, which caused by the exchanging rate floating. In addition, Junz & Rhomberg (1973) has shown the result of their study, which is the exchange rate depreciation, is good for the improving the export income of implementing fixed exchange rate system in the developed countries. Athukorala & Menon also got the same result on this topic in 1994. Therefore, it shows that the there is closed relationship between the exchange rate changing and export.#p#分頁標題#e#

 

2.2 The Relationship between the Exchange Rate Risk and International Trade

The exchange rate floating is a kind of risk, which can bring the impact for the international trade. The microcosmic thinks that the uncertainty of price can bring in the competitive companies reducing their output level. The researcher Ethier (1973) pointed out that abiding the increasing of uncertainty can reflect on the farther cut down of the export. In addition, Sercu and Vanhulle (1992) brought forward that the international trade may get profit from the increasing of the exchange rate risk, so that it shows the trade price is the gain-function of the risks. In addition, some empirical study got that the relationship between the exchange rate risk and export is negative on impact. From above, it can get that the exchange rate risk can give the foreclose on the international trade nowadays.

 

2.3 The Influence of RMB Appreciation

Chou (2000) indicated that the exchanging rate floating on RMB has the long-term negative impact for the total export, manufacturing export and mineral fuel export, after studying the impact of RMB exchange rate. On the other hand, Jan, et al (2006) got that the negative effect of RMB appreciation on export can dilute by the actual export impact of exchange rate across. For studying the reasons why the Chinese government would not like to appreciation currency, Bowles and Baotai (2006) shows that the Chinese government is use tax refund to adjust the negative effect of exchange rate, as a result of the Chinese government don’t want to partake the financial deficit of American.

 

3.0 Methodology  方法
 

For most study of exchange rate risk and export, Chou & Shih (1998) pointed out that the variables included lagged import demand, the GDP of the import country or replaced variable, the actual exchange rate, the actual exchange rate fluctuating, and so forth. This paper will use the four former variables which used more frequently. Due to the literatures, this paper has two hypotheses for studying the economic impact of exchange rate risk on commercial service trade. The first hypothesis is that the RMB appreciation has the positive effect on the China export to U.S., while the second hypothesis is that the relationship between the exchange rate risk and the export trade is positive correlation.

 

3.1 The Autoregressive Garch Model

The function of the autoregressive garch model is to indicate the impact of the exchange rate changing on export. Due to the research of Chou (2000), the equation for this study is:



stands for the actual export to U.S. in the month t, c is the constant,  is the actual exchange rate of RMB and dollar,  stands for the American Industrial Production Exponent, and  is the conditioned fluctuating of RMB exchanged to dollar. In the model (2),  is the time dumb variable which used to hold the exchange rate characteristic. About model (1) and (2),  and  are supposed to be the normal school, and fit the GARCH models which are shown as below:#p#分頁標題#e#