Recently, the Trade Facilitation has become an important trend for the development of the world economy. Meanwhile, how to make use of the concrete steps of the Trade Facilitation to recover the impetus of trade growth is especially important. Among the numerous measures of the Trade Facilitation, the measure of trade single window, which centralized three essential factors (i.e. simplification, coordination, standardization) of the Trade Facilitation, is widely recognized by the business world and regulators owing to its fast, efficient, and low-cost, and it has caused a highly attention in the international community when it appeared. As China vigorous promoting the Trade Facilitation reform, the construction of the trade single window is imperative. China's first Free Trade Pilot Zone was found in Shanghai in September 29th,2013. By comparing the Shanghai Free Trade Zone with the single windows in other countries, we analyzed and described the influence of the trade competitiveness. Finally, we provided the solutions for optimizing the single window.