Since the 18th National Congress of the Communist Party of China, the Party Central Committee with General Secretary Xi Jinping as the core has proposed a coordinated development strategy for the Beijing-Tianjin-Hebei region, promoting the coordinated development of Beijing-Tianjin-Hebei to achieve new and greater results, and injecting new vitality into regional economic prosperity. Promote the Beijing-Tianjin-Hebei region as the “third largest region” for promoting national economic growth. With the coordinated development of Beijing-Tianjin-Hebei as a national strategy, the Tianjin Free Trade Zone (Tianjin FTZ) has become more prominent in the process of promoting regional economic integration. In the context of the coordinated development of regionalization of Beijing-Tianjin-Hebei region, the Tianjin FTZ should exert the “sea estuary” effect, actively promote the substantial increase in the import and export trade volume of the import and export enterprises in the Gyeonggi region, and significantly increase the intensive trade enterprises in the Gyeonggi region. At the margin, from the level of international trade, the three countries in the Beijing-Tianjin-Hebei region have promoted the common development of the economy. The construction of the Tianjin FTZ plays an important role in promoting the overall economic level of the Beijing-Tianjin-Hebei region and has important practical significance. This paper conducts SWOT analysis on Tianjin FTZ, explores the impact of Tianjin FTZ on the coordinated development of Beijing-Tianjin-Hebei regional economy, and proposes countermeasures for Tianjin FTZ to promote regional economic development in Beijing-Tianjin-Hebei region.