Abstract: In the report， the meteorological observation data of 18 national meteorological stations in Hainan Island and reanalysis data during 1981 to 2014 were used to analyze the spatial and temporal distribution characteristics and the characteristics of atmospheric circulation and sea surface temperature of anomalous years in haze peak months， and provide the basis for the monthly climate prediction of haze. The results indicated that Haze days occurred mostly from October to February， with the most in December； There were more haze days of haze peak months in the northern inland and central mountainous areas， however， there were almost no haze days in southeast coast. The ocean-atmosphere characteristics of anomalous years in each haze peak month have certain similarity. Generally， the distribution of La Niña （El Niño） state years are presented in most months （except October） of more （less） haze years， Hainan island is controlled by abnormal northerly （southerly） air flow at 850 hPa wind field， which is favorable （unfavorable） for the transport of pollutants from Chinese mainland to Hainan Island， and reduce （increase） the precipitation to weaken （enhance） the purging of pollutants； Hainan Island is positive anomaly in potential height field at 500 hPa， which is not conducive to the vertical diffusion of pollutants， and it resulted in more haze days. However， the configuration of these abnormal characteristics was different in different months.