Adjustable ablation electrode

The invention provides an adjustable ablation electrode. The adjustable ablation electrode comprises a pen-shaped shell, an electrode tube, a connecting tube, an insulating tube and a shifting piece. The connecting tube is installed at the end, close to the tail, in the pen-shaped shell, the insulating tube is installed at the end, close to the head, in the pen-shaped shell and extends out of the pen-shaped shell, the electrode tube comprises a body tube and an ablation electrode arranged at one end of the body tube, and the surface of the end, close to the ablation electrode, of the body tube is coated with an insulating coating. The main body pipe is arranged between the connecting pipe and the insulating pipe; the ablation electrode on the main body tube is just exposed out of the insulating tube, at the moment, the exposed length of the electrode tube is short, the electrode tube can be used for cutting body surface tissue, the insulating coating on the main body tube extends out of the insulating tube, a