An electronic device includes a housing, a capacitive touch button, a PCB and a connection mechanism. The capacitive touch button is secured in the housing and includes a number of button bodies. The PCB is secured in the housing. The connection mechanism includes a circuit board and a connection element. The circuit board is secured in the housing and includes a number of sensor electrodes and a number of electrical protrusions, which are all arranged corresponding to the number of button bodies of the capacitive touch button. The sensor electrodes are connected to the capacitive touch button and the electrical protrusions. The connection element includes a first end and a second end. The first end is fixed on the PCB. The second end resists against the electrical protrusions for electrically connecting the capacitive touch button and the controller of the PCB.