The invention discloses a durable blow dryer for an extrusion molded cable. The durable blow dryer comprises a shell (1), a fixed base (2), an air inlet pipeline (8) and an air channel (9), wherein the air channel (9) is formed in the middle of the shell (1); an air inlet hole (3) and multiple air outlet holes (5) are formed in the surface of the shell (1); the air inlet hole (3) is formed in the bottom of the shell (1); the air inlet pipeline (8) communicates with the air inlet hole (3); the air channel (9) is an annular air channel; the air outlet holes (5) are arranged along a first circular part; the first circular part and the air channel (9) are concentric; and all the air outlet holes (5) directly face the central axis of the air channel (9). The durable blow dryer for the extrusion molded cable is simple in structure, reasonable in design, convenient to operate and reliable in effect; due to the reasonable design of the air outlet holes, air flow constantly faces the center of the cable without requiring an operator to adjust the air blowing angle; and in addition, the durable blow dryer is not damaged easily, and the air blowing efficiency is improved.