A side key component can be installed on the side wall of a shell of an electronic device along the thickness direction in a removable way and used for realizing control of the functions of the electronic device. The side key component comprises a baseplate, a first side key and a second side key; wherein, a mounting via penetrates the baseplate and is used for installing the first side key and the second side key; the first side key is installed on the baseplate in a rotating way and is contained at one side in the mounting via of the baseplate; the second side key is installed on the first side key in a rotating way and is contained at the other side in the mounting via. The invention also comprises an electronic device with the side key component.