The invention relates to the field of medical devices, in particular to a multifunctional treatment catheter. A multi-functional therapeutic catheter, comprising a catheter body and a balloon coated on the outer wall of the catheter body, a microcatheter is arranged inside the catheter body, and the microcatheter is hollow inside to form a microcatheter lumen, near the catheter body The end is provided with a suction inlet, and one side of the proximal end of the catheter body is also provided with a pressure inlet; wherein, the catheter body is a three-lumen catheter that does not communicate with each other, including a suction lumen, a pressure lumen And the inner lumen of the microcatheter, the suction lumen communicates with the suction inlet, and the pressurization lumen communicates with the pressurization inlet. The catheter can also deliver a thrombectomy stent for mechanical thrombectomy. When catheter suction is performed, stent thrombectomy can be performed at the same time, which shortens the operation time and reduces the cost borne by the patient and medical insurance costs.