The invention discloses a weatherable irradiation crosslinking cable material. Raw materials of the cable material comprise the following components, by weight, 100 parts of a thermoplastic elastomer, 0-35 parts of an engineering plastic, 2-80 parts of a polyolefin, 0.2-8 parts of a crosslinking agent, and 2-150 parts of a fire retardant. According to the invention, problems existing in manufacturing of cable materials from polyester copolymers are solved through reasonably designing the components and the ratio of the components, and utilizing the interaction of the components; and the prepared cable sheath material has the advantages of good processing fluidity, good mechanical properties, oil resistance, high temperature resistance, excellent hot extensibility and superior low temperature resistance after irradiation crosslinking, and substantial reduction of the material cost through the addition of the polyolefin interface phase solvent.