The invention relates to the field of extrusion molding dies, in particular to a double-layer composite pipe extrusion molding die. The double-layer composite pipe extrusion molding die comprises a recovering device body and a waste heat circulation structure; a second induced draft fan is fixedly installed on the inner surface of the front end of the recovering device body, a first induced draftfan is fixedly installed at the position, close to the second induced draft fan, of one side of the inner surface of the front end of the recovering device body, a third induced draft fan is fixedly installed at the position, close to the second induced draft fan, of the other side of the inner surface of the front end of the recovering device body, and a second stretchable buckle is fixedly installed at the position, close to the upper portion of the third induced draft fan, of the outer surface of the upper end of the recovering device body. The double-layer composite pipe extrusion moldingdie is provided with the waste heat circulation structure, the second stretchable buckle and anti-sliding landing legs, and therefore graphics cards in different sizes can be suitable for a waste heatrecovering device, the application face of the device is increased, secondary circulation heating on heat can be achieved, the using rate of the device is increased, the slip resistance is device isincreased, the service life of the device is prolonged, and the better using prospect is achieved.