Combined type extrusion die

The invention relates to an extrusion die and particularly relates to a combined type extrusion die composed of a plurality of opening dies. The combined type extrusion die comprises a flow distributor, an opening die part and a connector, wherein the flow distributor is composed of an upper die head and a lower die head; a flow distribution cavity for distributing flow is formed at the combined part of the upper die head and the lower die head; a flow distribution cone is arranged in the flow distribution cavity; a feeding end and a discharging end are arranged at the two ends of the flow distribution cavity; a connection hole is formed in a region outside the flow distribution cavity on the upper die head and the lower die head; the opening die part is provided with a mold cavity; the opening die part is fixedly connected with the discharging end of the flow distributor; and the connector is connected with the feeding end of the flow distributor. With the adoption of the design, an irregular plastic piece is gradually shaped from a fused state so that the deformation of an extruded shape is relatively slight; the movement impact on fluid in a runner is small; and the flowing resistance of the fluid is small and the energy consumption is low.