Combined computer keyboard

The utility model discloses a combined computer keyboard which divides a computer keyboard into an independent main keyboard, a functional keyboard and a digital processing keyboard, wherein the main keyboard, the functional keyboard and the digital processing keyboard can be combined with one another. The keyboard layout can be adjusted according to people's own use needs and use habits, and the use of the keyboard is more convenient and quick; the keyboard layout can be continuously adjusted to keep people's own balance, occupational diseases caused by using the mouse with a single hand for a long period of time, such as shoulder skewing and left or right skewing of vertebral columns which even have adverse effect on internal organs are avoided, and people's health is sufficiently paid attention to and protected; the separable technology of the key region of the keyboard enables people to have the freedom to decide whether a certain key region is singly placed and used, and more different requirements in the process of use are met.