A panel structure of a power apparatus is provided. The power apparatus includes a case. The front of the case is longitudinally provided with a panel. The panel is transversely formed with at least two parallel heat dissipation holes. The panel is formed with a connecting portion between the heat dissipation holes. A heat dissipation net is provided on the heat dissipation holes. The heat dissipation net is formed with a plurality of openings corresponding to the connecting portion. A reinforcement rib is provided on the connecting portion, preventing the panel from collapsing or deforming. The durability of the panel is increased, and the appearance of the panel is pleasing to the eye.