Abstract: Improving the technological complexity of export is an important direction for China's foreign trade and economy to achieve high-quality development. Under controlling traditional variables, this paper focuses on the impact mechanism of inter-regional industrial transfer on the technological complexity of China's export, and makes an empirical evaluation using the Provincial Spatial Panel Model and data during the period from 2003 to 2017. The conclusion shows that the export technology complexity of a province is not only affected by its regional industrial transfer, but also by the regional industrial transfer of adjacent areas, which shows that the region industrial transfer is a significant promoting effect on the export technology complexity, but the industrial transfer of adjacent areas has a significant restraint on it. In addition,R&D and FDI in this region and its adjacent areas, as well as infrastructure improvement in the adjacent areas help to increase the technological complexity of export in the region.2017. The conclusion shows that the export technology complexity of a province is not only affected by its regional industrial transfer, but also by the regional industrial transfer of adjacent areas, which shows that the industrial transfer of the region has a significant promoting effect on the export technology complexity, but the industrial transfer of adjacent areas has a significant restraint on it. In addition, R&D investment and FDI in this region and its adjacent areas, and infrastructure improvement in the adjacent areas help to increase the technological complexity of export in the region.