An electronic device includes a first housing portion, a second housing portion, a circuit board, a battery, a display screen, and a heat-dissipating structure. The second housing portion is coupled together with the first housing portion. The circuit board and the battery are received within the second housing portion. The heat-dissipating structure is arranged between the circuit board and the display screen. The heat-dissipating structure includes a substrate including a first surface and a second surface opposite to the first surface and defines an opening passing through the first surface and the second surface. The heat dissipating element is located in the opening.