A radiofrequency ablation catheter includes an electrode ablation head (10), a Positive Temperature Coefficient (PTC) thermistor (20), and an inner conductor (30), where the electrode ablation head (10) is disposed at an end portion of the inner conductor (30), the PTC thermistor is disposed between the electrode ablation head (10) and the inner conductor (30), and the inner conductor (30) is connected to a cable plug component (40). The radiofrequency ablation catheter and a therapy device including the radiofrequency ablation catheter can precisely control the ablation temperature by means of PTC, such that upon coagulation of tissues, the ablation catheter is not adhered to the tissues, thus avoiding the risk of complications such as rebleeding.
