The albedo of Antarctic sea-ice zone (ASZ) can affect the radiation budget and thus has essential influence on global climate change. Using the albedo product from satellite application facility on climate monitoring, the spatio-temporal variations of summer albedo in sea-ice zone from 1983 to 2022 in Antarctica and six sea sectors were analyzed, the relationships between ASZ albedo and sea ice concentration (SIC), air temperature and atmospheric circulation were also quantified. Results show that the albedo retrieved from satellite is consistent to that obtained from in situ observations and thus the satellite-based albedo is reliable. Among the six sea sectors, Weddell West has the highest multi-year averaged albedo of 0.61, whilst Ross Sea features the lowest one of 0.45. Albedo of ASZ in summer experienced gradual increases before 2015 followed by the rapid decline (2015–2022). All sea sectors have similar ASZ albedo variations to that of Antarctica, excepting for Bellingshausen-Amundsen Seas where decreases can be found in both two periods. ASZ albedo is positively correlated to SIC and negatively related to air temperature. From 1983 to 2015, the decreased summer air temperature weakened the sea ice ablation and the SIC increased slightly (0.03%/a), sea ice area increased by 2.07 × 10⁵ km² per decade on average, all of these led to the increase of reflected solar radiation and sea-ice zone albedo. During the summer from 2015 to 2022, as the increased temperature enhanced the sea ice ablation, more leads and open water appeared, and then decreased the SIC. The sea-ice zone thus absorbed more solar radiation and had less reflected radiation, which leads to a rapid decline of the albedo. In addition, the Antarctic annular mode is one of the driving factors changing the albedo in sea-ice zone in the Ross Sea and Weddell Sea.