The invention provides a head-mounted diagnosis and treatment device, a brain-computer interface
system and a brain
activity monitoring intervention method. The head-mounted diagnosis and treatment device comprises a head-mounted structure, at least one
active electrode, at least one pair of stimulation electrodes and a control module, the head-mounted structure comprises a head beam supporting part and a
frontal lobe wearing part, the two ends of the
frontal lobe wearing part are connected with the two opposite sides of the head beam supporting part respectively, and the
active electrode is arranged on the inner side of the
frontal lobe wearing part. The
active electrode is arranged on the head beam supporting part and used for collecting electroencephalogram signals of a frontal lobe area contact part, the stimulation
electrode is arranged on the inner side of the head beam supporting part and used for forming electrical stimulation on the frontal lobe area contact part, and the control module is electrically connected with the active
electrode and the stimulation
electrode and used for determining the
brain function state according to the electroencephalogram signals collected by the active electrode and controlling the stimulation electrode according to the determined
brain function state. Thus, electrical stimulation therapy is formed. According to the head-mounted diagnosis and treatment device, the brain-computer interface
system and the brain
activity monitoring intervention method, diagnosis and treatment can be integrated, and the head-mounted diagnosis and treatment device is easy to wear and portable.