China, seating on the top in gross carbon emission, confronts a rising global pressure in carbon emission reduction, which is aggravated by the central and western China in underdeveloped industrialization and urbanization. This paper, based on a cases study on Fuzhou city, in central China, uses binary curve model and SPSS to check the EKC curve of carbon emission and applies descriptive curve graph to analyze its driving factors. The relation of gross carbon emission to GDP per capita shows an upside-down U-shaped EKC curve with the peak in 2013, and then the increment is rising slowly. The major driving factors are industrial and energy structures and their changes, so Fuzhou's gross carbon emission will be rising in a long term, but at a decreasing added amplitude. Fuzhou is in its middle to post period of industrialization and urbanization, and is optimizing its industrial and energy structures, but its "second-third-first" industrial structure and high carbon energy will remain in a long term. Low carbon industrial development and clean energy production and consumption are the path to carbon emission reduction in Fuzhou.