The tectonic activity analysis of the micro- terranes in the Wuyi block is a window to understand the tectonic evolution of the Cathaysia block. As an important boundary that divides the South Wuyi terrane and the North Wuyi terrane, the Nanping- Ninghua tectonic belt played a crucial role in the tectonic evolution between the South Wuyi terrane and North Wuyi terrane. However, previous research and understanding of the metamorphic volcanic rocks in the Nanping- Ninghua tectonic belt are still controversial, which limits our understanding of the tectonic properties of the Nanping- Ninghua tectonic belt. Therefore, in this paper, we mainly focus on the study of the meta- volcanic rocks by field route geological survey, geochronology dating and isotope geochemistry in the Nanping- Ninghua tectonic belt. Combined with the previous research, we suggest that the metamorphic volcanic rocks in the Nanping- Ninghua tectonic belt were mainly formed at 756~720 Ma in an active continental margin or island arc environment, which would indicate that the Nanping- Ninghua tectonic belt may represent a nearly east- west island arc volcanic belt between the South Wuyi terrane and North Wuyi terrane in the Nanhua period. Combined with the convergence polarity of the south- north offset reflected by the tectonic deformation in the tectonic belt, we proposed that there may still be ocean- land collision or land- land merging between the South Wuyi terrane and the North Wuyi terrane in the Nanhua period, which indicates that the multi- micro- terranes and multi- stage collision may be major characteristics for the tectonic evolution process in the Cathaysia block.