Based on the observation data of sunshine, cloud cover, weather phenomenon, temperature and humidity from the Antarctic Great Wall Station of China during 1988-2017, the climatic variation characteristics of solar radiation and its relationship with the meteorological elements in the King Georges Island, West Antarctic, are studied. The results show that the duration of sunshine in the Antarctic region is much lower than that in the mid-low latitudes, mainly because the cloudy weather dominants all year around and sunlight is blocked by cloud. Since 2000, the total cloud cover and relative humidity increase, while the duration of sunshine shows a decrease tendency. According to the statistical analysis of monthly averaged relative humidity and the monthly occurrence frequency of weather phenomena, such as rain, snow, fog, mist, blowing snow, and the number of days when the lowest temperature is equal to or greater than 0 ℃, it is found that occurrence frequency of the liquid (solid) phenomenon is consistent (opposite) to the variation trend of sunshine percentage, i. e. lower (higher) percentage of sunshine corresponds to less (more) liquid phenomenon and more (less) solid phenomenon.