A multi-pole synchronous pulmonary artery radiofrequency ablation catheter, comprising a control handle, a catheter body, and an annular ring; the control handle being connected to an external temperature control device and provided with an adjustment apparatus; the catheter body being hollow, with a cavity being arranged in the catheter body; and a lead wire, a temperature sensing wire and a pull wire being arranged in the cavity; wherein: one end of the catheter body is flexible, and this flexible end is connected to the annular ring, and the other end of the catheter body is connected to the control handle; one end of the pull wire is connected to the flexible end, and the other end of the pull wire is connected to the adjustment apparatus on the control handle, the adjustment apparatus adjusts the tension of the pull wire to control the radian of the flexible end; a shape memory wire is arranged in the annular ring, one end of this shape memory wire extending to the end of the annular ring and the other end of the shape memory wire passing through the root of the annular ring, being fixed on the flexible end of the catheter body; the flexible end comprises a groove, with a connector being arranged in the groove, one end of the connector being connected to the pull wire and the other end of the connector being connected to the shape memory wire; the annular ring is provided with an electrode group, the electrode group having a plurality of electrodes provided along the annular ring, and each electrode is connected to the lead wire and the temperature sensing wire; the lead wire and temperature sensing wire go through the catheter body and are electrically connected to the control handle; an infusion tube is arranged in the cavity of the catheter body and a through hole is arranged on each electrode; the infusion tube going through the annular ring and being connected to each electrode; the transfused fluid flowing out from the through holes on the electrodes of the electrode group; each electrode is able to extract neural electrical signals, sense the temperature and conduct ablation energy; and when the electrodes receive current, the fluid automatically diffuses from the through holes. a control handle, a catheter body, and an annular ring; one end of the catheter body is flexible, and this flexible end is connected to the annular ring, and the other end of the catheter body is connected to the control handle; one end of the pull wire is connected to the flexible end, and the other end of the pull wire is connected to the adjustment apparatus on the control handle, the adjustment apparatus adjusts the tension of the pull wire to control the radian of the flexible end; a shape memory wire is arranged in the annular ring, one end of this shape memory wire extending to the end of the annular ring and the other end of the shape memory wire passing through the root of the annular ring, being fixed on the flexible end of the catheter body; the flexible end comprises a groove, with a connector being arranged in the groove, one end of the connector being connected to the pull wire and the other end of the connector being connected to the shape memory wire; the annular ring is provided with an electrode group, the electrode group having a plurality of electrodes provided along the annular ring, and each electrode is connected to the lead wire and the temperature sensing wire; the lead wire and temperature sensing wire go through the catheter body and are electrically connected to the control handle; an infusion tube is arranged in the cavity of the catheter body and a through hole is arranged on each electrode; the infusion tube going through the annular ring and being connected to each electrode; the transfused fluid flowing out from the through holes on the electrodes of the electrode group; each electrode is able to extract neural electrical signals, sense the temperature and conduct ablation energy; and when the electrodes receive current, the fluid automatically diffuses from the through holes.