A corrugated radiofrequency ablation catheter, provided with a strip-shaped connecting catheter , an electrode frame provided at the front extremity of the connecting catheter , and a control handle provided at the rear extremity of the connecting catheter ; wherein: the electrode frame is a corrugated electrode frame consisting of multiple corrugations, where multiple electrodes are distributed on the corrugations; each corrugation is in the shape of a fold line composed of several straight line segments, or each corrugation is composed of several curve segments, or each corrugation is composed of several curves and straight lines; a slidable, supporting, wall-attaching adjustment wire is provided within one lumen of the electrode frame and the connecting catheter , and the supporting, wall-attaching adjustment wire is divided into a flexible segment away from the control handle and a rigid segment in proximity to the control handle ; the head end of the supporting, wall-attaching adjustment wire is limited outside the front extremity of the electrode frame, and can slide relative to the front extremity of the electrode frame; the tail end of the supporting, wall-attaching adjustment wire returns to the rear extremity of the connecting catheter through the lumen of the electrode frame and the connecting catheter and is fixed to a control element arranged on the control handle ; and the control element is used for controlling the supporting, wall-attaching adjustment wire to move forward and backward; when the rigid segment of the supporting, wall-attaching adjustment wire is in the electrode frame, the portion, which overlaps with the rigid segment , of the electrode frame is linear; and when the flexible segment of the supporting, wall-attaching adjustment wire is in the electrode frame, the portion, which overlaps with the flexible segment , of the electrode frame is corrugated; when the electrode frame naturally expands to perform wall attachment, a wall attachment states of the electrode can be further adjusted by further pulling the supporting, wall-attaching adjustment wire . the electrode frame is a corrugated electrode frame consisting of multiple corrugations, where multiple electrodes are distributed on the corrugations; each corrugation is in the shape of a fold line composed of several straight line segments, or each corrugation is composed of several curve segments, or each corrugation is composed of several curves and straight lines; a slidable, supporting, wall-attaching adjustment wire is provided within one lumen of the electrode frame and the connecting catheter , and the supporting, wall-attaching adjustment wire is divided into a flexible segment away from the control handle and a rigid segment in proximity to the control handle ; the head end of the supporting, wall-attaching adjustment wire is limited outside the front extremity of the electrode frame, and can slide relative to the front extremity of the electrode frame; the tail end of the supporting, wall-attaching adjustment wire returns to the rear extremity of the connecting catheter through the lumen of the electrode frame and the connecting catheter and is fixed to a control element arranged on the control handle ; and the control element is used for controlling the supporting, wall-attaching adjustment wire to move forward and backward; when the rigid segment of the supporting, wall-attaching adjustment wire is in the electrode frame, the portion, which overlaps with the rigid segment , of the electrode frame is linear; and when the flexible segment of the supporting, wall-attaching adjustment wire is in the electrode frame, the portion, which overlaps with the flexible segment , of the electrode frame is corrugated; when the electrode frame naturally expands to perform wall attachment, a wall attachment states of the electrode can be further adjusted by further pulling the supporting, wall-attaching adjustment wire . <EOS>