The present invention relates to an ionic wind generation device and an indoor unit of an air conditioner. The ionic wind generation device comprises at least one discharge module used for generating ionic wind. Each discharge module comprises a shell, a mesh electrode provided in the shell, and multiple needle electrodes distributed at one side of the mesh electrode. One side of the mesh electrode is provided with a shaping frame, and the shaping frame is fixed to the shell, so that the mesh electrode is always maintained in a planar state perpendicular to an air supply direction of the ionic wind generation device, and therefore, the relative position between each needle electrode and the mesh electrode is ensured to be constant, frictional sparking and odor are avoided, and potential safety hazards are eliminated. The indoor unit of an air conditioner comprises: a housing provided with at least one air supply outlet for airflow to flow out, wherein one or more of the air supply outlets are provided with an opening/closing mechanism used for rectification and air supply; and at least one ionic wind generation device provided in the housing for supplying ionic wind to one or more of the air supply outlets.