Based on Landsat7,Landsat8 images and the statistical data of soil erosion area, water resources, rainfall and pollutant emissions in 2011—2015, the ecological environment quality and its spatial and temporal trends in Guangdong Province were evaluated during the 12th FiveYear Plan Period according to the “Technical Criterion for Ecosystem Status Evaluation”(HJ 192—2015). Moreover, the influencing factors were comprehensively explored. The results showed that the ecoenvironment quality of Guangdong Province was totally excellent, and each city was assessed as excellent or good. And what’s more, the overall ecoenvironment quality of northern Guangdong was the best.Besides, the ecoenvironment quality of Guangdong Province and various cities were gradually improved and stable with mild fluctuations. The decline of major pollutant emissions and the increase of total water resources were the main reasons for improving the ecoenvironment quality.