▎ 摘　　要

NOVELTY - The electrode has a probe fixed on a side of an electrode base. The probe is provided with a flexible substrate. A conductive medium is fixed on a surface of the flexible substrate. Width of the probe is gradually reduced along direction away from the electrode base. A connecting piece is fixed on another side of the electrode base. An outer circumferential surface of the connecting piece is provided with an outer screw thread for connecting with the outer screw thread. The conductive medium comprises graphene. The electrode base comprises a circular metal chassis. USE - Dry electrode for use in a resistance measuring device i.e. electroencephalogram collecting device for detecting brain electric signal e.g. stroke, epilepsy and brain disease. ADVANTAGE - The electrode has simple structure, small volume and light weight, and is convenient to carry. The electrode is automatically and accurately adjusted through a controller and a power mechanism relative to the scalp of the to-be-detected so as to adjust contact between the electrode and the scalp for finally realizing automatically adjusting strength of the brain electric signal. The electrode avoids need to be injected conductive adhesive, thus improving wearing comfort, reducing risk of skin damage and ensuring stability and high precision stability of the collected brain electrical signal.