Safety protection needle electrode

The utility model discloses a safety protection needle electrode, which relates to the technical field of medical instruments, and comprises a needle electrode body, an insulating plate, a limiting plate, a sliding rod, a lifting plate, a protection pad, a protection cylinder and through holes, the outer surface of the needle electrode body is fixedly connected with the insulating plate, and the upper surface of the insulating plate is provided with annularly arranged through holes; the inner wall of each through hole is slidably connected with a sliding rod, and the bottom ends of the two sets of sliding rods are jointly and fixedly connected with a protection cylinder. Through the cooperation of the insulating plate, the through hole, the sliding rod and the protective cylinder, the protective cylinder and the insulating plate can be connected through the cooperation of the through hole and the sliding rod, meanwhile, the protective cylinder and the needle electrode body can be connected, leakage of the nee