Abstract: In order to provide a scientific method for optimizing the medium and long term planning of green space pattern and improving the quality of green space landscape in Haikou built-up area， in our report， based on the data sources from the QuickBird satellite images in 2008， 2013， 2017， and 2020， the green space in the built-up area of Haikou City was analyzed. According to the "Urban Green Space Classification Standard" （CJJT85-2017）， ArcGIS 10.2 was used to collect the green space information， the indexes of green space information were obtained with Fragstats4.2 software. The results indicated that during the past 12 years， the landscape pattern of the green space in the built-up area of Haikou City has changed significantly， SHDI value decrease from 1-2， SHEI value decrease from 0-1， and the diversity of greenbelt landscape decrease； the number of green patches increases from 1052 to 1482， the average area of green patches decrease from 1.86 hm² to 1.73 hm²， and the degree of fragmentation increase； the FRAC-MN dimension decrease from 1.05 to 1.03， and the landscape shape tend to be regular. The number of green patches attached to other special parks， amusement parks， square lands and land for public management and public service facilities continues to increase， however， the average patch area continues to decrease. These data suggested that the fragmentation of green patches attached to other special parks， amusement parks， square lands， and the land for public management and public service facilities is serious.