Abstract: In order to study the characteristics and the evolution of laser-induced liquid droplet jet flow plasma, the behaviors of laser-induced liquid droplet plasma were investigated by the shadow method based on laser-droplet interaction system. Time-series images of CO2 laser-induced plasma with liquid droplet were captured. The evolution of air shock wave was obtained and the energy of shockwaves was estimated by theoretical model. The results show that air shock wave occurrs with laser-induced plasma and the radial expansion of shockwaves increases linearly under current time range. In addition, laser energy dissipated in the droplet was estimated to 32% for generating air shockwaves. The characteristics and the evolution of shockwaves generated by laser-induced droplet could provide a reference for laser induced fuel spray ignition.