Abstract: In our report， based on the data of lightning location and Hainan weather typing from 2010 to 2019 （April to October）， the frequency and frequency ratio of positive CG lightning in Hainan Island were analyzed in terms of annual distribution， monthly distribution， temporal distribution and temporal distribution under the influence of different weather types. The results showed that the proportion of positive CG lightning in Hainan Island from April to October is 4.60%， the total CG lightning frequency， positive CG lightning frequency and positive CG lightning proportion in each year are basically positively correlated； positive and total CG lightning frequency curves from April to October are both bimodal， and the peaks of the two curves correspond to the same month， however， the total CG lightning frequency curve show the main peak in May and the secondary peak in August， and positive CG lightning frequency curve show the main peak in August and the secondary peak in May， the proportion of positive CG lightning increase month by month from May to August， the proportion of positive CG lightning in August and September is higher than that in other months； when the global summation method is used to analyze positive CG lightning time distribution， both positive and total CG lightning frequency curves are unimodal， and the time corresponding to the peak of the two curves is the same， the peak values all appeare between 16：00 and 17：00， the proportion of positive CG lightning increased hour by hour from 13：00 to 19：00； when the total CG lightning peak period fixation method is used to analyze the time distribution of positive CG lightning frequency during thunderstorm， the peak value of positive CG lightning frequency and total CG lightning frequency correspond to the same time， the proportion of positive CG lightning generally increases hour by hour. In the peak period of total lightning frequency， the proportion of positive CG lightning decrease slightly， positive CG lightning mainly occurs during and after the peak of total CG lighting frequency， the opposite is occur for negative CG lightning. The spatial distribution characteristics of positive and negative CG lightning density of three weather types in Hainan Island from 13：00 to 19：00 are also analyzed. The results indicated that the high value area of positive CG lightning density is the downstream of the thunderstorm movement compared with the high value area of negative CG lightning density of three weather types. The analysis results of three cases of lightning disaster caused by positive lightning suggested that the lightning disaster caused by positive CG lightning occur in the maturity and extinction period of the thunderstorm process， even under the condition of stratiform cloud， and the lightning current intensity is strong and destructive.