Abstract:The frequent occurrence of the glacial lake outburst floods(GLOFs) has seriously hindered the social and economic development of Tibet and affected social stability. As the climate warms, the glacier thins and retreats, the glacier runoff increases, and the risk of GLOFs increases. Based on the observation data of Galongla Glacier runoff in Southeast Tibet, this study analyzes the characteristics of glacier runoff changes from May to September during the ablation period from 2017 to 2019 and discusses the relationship between the frequency of GLOFs events in Tibet from 1931 to 2020 and the peak runoff. The results show that from 1931 to 2020, 32 GLOFs occurred in Tibet, mainly from May to September; In ten-day change, the maximum frequency shows a single peak structure, and the frequency is the highest in the first ten days of July; The frequency of GLOFs is significantly correlated with the peak runoff, and the correlation coefficient is 0.673. With the increase of runoff, the frequency of GLOFs gradually increases. In the context of climate warming, GLOFs caused by glacier melting should be paid attention to, and the observation of glacier melting runoff and the monitoring of glacial lake water level should be strengthened to predict GLOFs.