A device for deep brain stimulation comprising: a control module outside of a brain; a power module electrically connected with the control module; a stimulation output module electrically connected with the control module and the power module; and a lead adapted for being implanted in the brain and electrically connected with the stimulation output module, wherein the lead comprises: a proximal section and a distal section, wherein the proximal section comprises a first contact group (830 and 840) and a second contact group (950 and 960), the first contact group comprises two first contacts (830 and 840) and the second contact group comprises two second contacts (950 and 960); the distal section comprises a first electrode group (810 and 820) and a second electrode group (930 and 940), the first electrode group (810 and 820) comprises two first electrodes (810 and 820) which are placed in a nucleus accumben of a brain; the second electrode group (930 and 940) comprises two second electrodes (930 and 940) which are placed in an anterior limb of an internal capsule of the brain; and the first electrode group (810 and 820) and the second electrode group (930 and 940) are configured to stimulate the nucleus accumben and the anterior limb of the internal capsule in the brain simultaneously; the two first contacts are electrically connected to the two first electrodes in a one-to-one correspondence, and the second two contacts are electrically connected to the second two electrodes in a one-to-one correspondence; the first two contacts and the second two contacts are used for receiving stimulation signals from the control module and transmitting the stimulation signals to the two first electrodes and the two second electrodes for separate and accurate stimulation; the stimulation parameters of the first electrode group and stimulation parameters of the second electrode group are independently adjustable; and the stimulation frequency of the first electrode group (810 and 820) is lower than that of the second electrode group (930 and 940). a control module outside of a brain; a power module electrically connected with the control module; a stimulation output module electrically connected with the control module and the power module; and a lead adapted for being implanted in the brain and electrically connected with the stimulation output module, wherein the lead comprises: a proximal section and a distal section, wherein the proximal section comprises a first contact group (830 and 840) and a second contact group (950 and 960), the first contact group comprises two first contacts (830 and 840) and the second contact group comprises two second contacts (950 and 960); the distal section comprises a first electrode group (810 and 820) and a second electrode group (930 and 940), the first electrode group (810 and 820) comprises two first electrodes (810 and 820) which are placed in a nucleus accumben of a brain; the second electrode group (930 and 940) comprises two second electrodes (930 and 940) which are placed in an anterior limb of an internal capsule of the brain; and the first electrode group (810 and 820) and the second electrode group (930 and 940) are configured to stimulate the nucleus accumben and the anterior limb of the internal capsule in the brain simultaneously; the two first contacts are electrically connected to the two first electrodes in a one-to-one correspondence, and the second two contacts are electrically connected to the second two electrodes in a one-to-one correspondence; the first two contacts and the second two contacts are used for receiving stimulation signals from the control module and transmitting the stimulation signals to the two first electrodes and the two second electrodes for separate and accurate stimulation; the stimulation parameters of the first electrode group and stimulation parameters of the second electrode group are independently adjustable; and the stimulation frequency of the first electrode group (810 and 820) is lower than that of the second electrode group (930 and 940).