LIFT (Laser Induced Forward Transfer) is a widely used micromachining technology. At present, it has gradually become one of the research hotspots of micromachining. In this paper, the level set method is used to establish the numerical model of droplet impacting solid wall in the process of laser forward transfer, and the effects of wall wettability and droplet initial velocity on the spreading morphology of molten metal droplets after impacting the wall are explored. Results show that the larger the contact angle is, the more likely the droplets are to retract and break when they hit the wall, and the greater the possibility of droplet rebound is. With the increase of initial velocity, the maximum spreading area of droplets gradually increases, and the spreading time of droplets gradually increases. In the experiment, droplets with different initial velocities are obtained by applying different intensities of laser energy. The droplet deposition point size is compared with the simulated result, and it is found that they have good consistency. Therefore, the deposition size of laser transfer droplets can be predicted by the developed simulation model.