An electronic device includes a housing, a button mechanism fixed to the housing, a switch circuit, at least two switches and at least one support. The button mechanism includes a button body, at least two buttons integrated on the button body, and a stopper formed between every each two adjacent buttons. The switches are covered by the button mechanism and connect to the switch circuit. The at lease one support is fixed to the housing and one of the at least one support is positioned between two adjacent switches. When one of the buttons is pressed, the pressed button activates the corresponding switch and the adjacent support of the switch resists the adjacent stopper of the pressed button.