An electronic device is provided. The electronic device includes a mechanism, a circuit module and a fixing element. The circuit module is disposed inside the mechanism. The circuit module includes a circuit board and a fan. The circuit board has at least one edge and a fixing hole. The fan has a first lateral side and a second lateral side. The first lateral side has a first hook buckled on the edge. The second lateral side has at least one screwed board, wherein the screwed board has a screwed hole. The fixing element is screwed on the screwed hole and the fixing hole to screw the fan on the circuit board.