Abstract: This study examined the coastline changes of Fujian Province using remote sensing and GIS techniques. The fractal dimension of the coastline is calculated using 4 year data from 1995, 2001, 2010 and 2017 by boxcounting method. At the same time the characteristics of spatialtemporal changes of the coastline, the relationship between the changes of coastline length and fractal dimension along with the causes of coastline changes are analyzed. The results show that the coastline increased by a total of 388.99 km in 1995-2017. It entered a fast increment period after 2010. The length changed dramatically along the coasts of Ningde and Putian compared with other areas where coastlines changed less. The fractal dimensions of the coastline increased and then decreased in the study period and the changes were more complicated in areas of Ningde, Fuzhou and Quanzhou. A linear relationship existed in a certain extent between the historical coastline length and fractal dimensions. Statistical analysis on the changes of coastline lengths and fractal dimensions demonstrates that the increase (or decrease) of local coastline length, in most cases, leaded to the positive increase (or decrease) of whole coastline fractal dimensions. Compared to the natural factors such as estuarine depositions and shoreline erosions, civil-coastal engineering construction was a more important factor varying the coastlines in Fujian province.