This study investigates temporal and spatial variations of haze days and the possible climatic factors in South China during recent 54years. Basic statistical methods are used here based on the observed data from 57meteorological stations, including linear regression, cluster and correlation analysis. The result shows that more haze days occur in the Pearl River Delta (PRD) region of Guangdong and mid-eastern Guangxi. The haze days increase remarkably during the past 54 years and show a decline trend after 2008. Among the four seasons, the heaviest haze pollution happened in winter, follows spring and autumn, and relatively weak in summer. They are also associated with a decrease trend after 2008 except winter. In addition, all of the haze days in different varied-intensity increased obviously during the past 54 years. It is further found that haze pollution in South China increases not only in the number of days, but also the pollution intensity. The rapidly rise time periods of haze days are different in different regions over South China. It occurs in the 1990s over serious pollution and normally pollution regions, but shows after 2000 for the relatively clean regions. Number of haze days over the serious polluted and normal polluted regions has been decreased during recent 10 years, but it remains a rapid increase for the relatively clean areas. Our further analysis suggests that the decreased trends of precipitation days during recent 54 years would factor in reducing the wet-depositing capacity of atmospheric pollutants. Increase of the breeze days, which connects to the decrease of mean wind speed and strong wind days, on the other hand, would also contribute to the reduction of pollutants diffusion capacity and more haze pollution.