A keyboard set may be provided on chair armrests.The keyboard set includes a left keyboard, a right keyboard, a first detachable support, a second detachable support, and two multidirectional angle adjusting mechanisms. Each of the left keyboard and the right keyboard includes a plurality of keys. One end of the first detachable support is combined with the left keyboard, and one end of the second detachable support is combined with the right keyboard. The two multidirectional angle adjusting mechanisms are respectively provided between the first detachable support and the left keyboard, and between the second detachable support and the right keyboard.