Building a high-quality China Free Trade Pilot Zone is of milestone significance in China"s reform and opening up process. On the basis of analyzing the representative models and institutional characteristics of typical global free trade zones, this article systematically summarizes the overall deepening characteristics and trends of China"s pilot free trade zones, as well as the differences in institutional innovation of each pilot free trade zone, and clarifies the role that China should play in the construction and reform of pilot free trade zones. Through analysis, it has been found that there are four main problems in the development of China"s pilot free trade zones, including new challenges brought about by the complex global situation, deviation in the focus of pilot free trade zone construction, lack of legislative guarantees for institutional innovation, and insufficient support for high-level opening. Subsequently, targeted institutional innovation measures have been proposed to better leverage pilot free trade zones as the basis for high-level opening. It is hoped that this opportunity will be used to improve the internal linkage mechanism of the national pilot free trade zones, eliminate differences in domestic and foreign economic and trade rules as soon as possible, and provide useful experience and inspiration for China to accelerate the construction of high-quality pilot free trade zones and the realization of high-level opening.