There is provided a deep brain stimulation system having k focuses, which comprises: a first electrode and a second electrode, used for connecting one side of a brain scalp; a third electrode and a fourth electrode, used for connecting the other side of the brain scalp; and a first signal generation unit, a second signal generation unit, . . . , a (2k−1)th signal generation unit and a 2kth signal generation unit, wherein the k is a positive integer greater than or equal to 2; and each of the signal generation units is used for providing the following currents for the first electrode to the fourth electrode: a first current and a second current, which are interfered at a deep portion of a brain to form a first focus; and a (2k−1)th current and a 2kth current, which are interfered at the deep portion of the brain to form a kth focus.
Noninvasive deep brain stimulation system having k focuses