Tire tread/side composite extrusion combined cooling production line consists of two parts: Main machine and auxiliary line; The main machine consists of two or three pin cold feed extruders. The hydraulic automatic compound tread/side extrusion head is equipped to realize the composite extrusion molding of various different rubber compounds in the machine head. The timing screw and the machine head have a special mechanism and unique technical parameters, so the extruded tread/side has high density and good plasticizing and mixing effect. The section size is accurate, stable and the surface is smooth. Different head and screw parameters can be applied to various specifications of engineering tires, radial tires and bias tires. Tread, sidewall and composite extrusion of the tire. The main line of the connection line consists of two pin type cold feed extruders, two composite hydraulic heads, hydraulic power system, temperature control system and feeding. The machine consists of steel frame platform, base, electrical control system; The connection device is mainly connected to the conveyor, cooling roller, width measuring device, upper side. Incline conveyor belt I, side wall paste transition film device, uphill conveyor belt II, spray cooling device, downhill conveyor belt, fixed length cutting device, secondary. Blowing device and quick separation roller, single end inspection scale, manual take-up roller device, side wall-side bridge conveyor, take-up conveyor, four-station roller. The composition of the curved device and the production line electrical control system.