The ultrasonic electric propulsion system’s electrocoalescence phenomenon is first made visible in this work via a high-speed imaging technique. A long-distance microscope and a high-speed camera (NAC HX-6) are used in the experiment. As a working propellant, formamide and lithium chloride (0.8%) solution is utilized. Charged droplets electrocoalescing at various skew angles and speeds have been observed in the studies. The two droplets have a tendency to coalesce after colliding under the conditions of low velocity and large diameters, which are indicative of collisions dominated by surface tension. After droplets collide, the combined droplets rotate, which indicates that energy is transformed during the collision process and some of the kinetic energy is converted to momentum energy. A numerical simulation model is set up and Navier–Stokes equations are used to describe fluid motion and monitor interface movements in order to further explore electrocoalescence. Understanding of the microscale deformation in electrocoalescence is aided by numerical simulations of electric field and pressure contours.