The application relates to an electronic device, which comprises a shell, a screen, a circuit board, a circuit board support, a first heat-conducting member and a first electric connection structure. The screen is mounted on the shell, the circuit board support is located in a cavity surrounded by the shell, the circuit board is arranged on the circuit board support, and the circuit board and the screen are electrically connected. The first heat-conducting member is arranged between the circuit board support and the circuit board. By arranging the first heat-conducting member between the circuit board support and the circuit board, the first heat-conducting member can directly contact the circuit board, so that the heat dissipation efficiency of the circuit board is improved, and the service life of the electronic device and the heating device on the circuit board is prolonged. In addition, the circuit board is provided with a first connector, the first connector is connected with the circuit board support through the first electric connection structure to realize grounding, the isolation degree between the first connector and an antenna can be improved, and the risk of interference between the first connector and the antenna is reduced.