Himeji Institute of Technology When an electric field is applied to a drop suspended in another liquid phase, the drop shows different behavior depending on the interaction of its charge with the electric field. Present paper describes two typical examples of the behavior in the electric filed: (1) flow patterns around the drops, and deformation and breakup of the drops, and (2) dielectrophoresis of the droplets of micrometer size. The former will be useful for improvement of heat and mass transfer around and within the drops. The latter will be useful for demulsification of W/O emulsions and handling of micrometer size particles in the liquid phase and under microgravity.