Abstract: Based on experimental method, bubble bursting process and jet droplet release process under different diameters were captured by high speed camera. The evolution process of bubble cavity following bubble bursting was obtained. The velocity of jet droplet was captured. The effect of bubble diameter and bubble surface lifetime on jet droplet release process was studied. The experimental results show that bubble surface lifetime has a significant influence on process of jet droplet generated by bubble bursting. As the bubble surface lifetime increases, jet droplet velocity will also increase. When the bubble diameter is small, bubble surface lifetime distribution is characterized by Rayleigh distribution and the release probability of jet droplet is high. As bubble diameter increases, distribution law of bubble surface lifetime gradually shifts to exponential-decay distribution, the release probability of jet droplet decreases. A more accurate correlation between jet droplet velocity and bubble diameter was obtained based on current experimental data.