A high-temperature-resistant polyvinyl chloride/nitrile rubber composite cable material comprises the following components in parts by weight: 100 parts of polyvinyl chloride, 20-50 parts of nitrile rubber, 20-40 parts of a plasticizer a, 20-30 parts of a plasticizer b, 5-10 parts of a flame retardant a, 5-20 parts of a flame retardant b, 10-40 parts of a filler a, 20-30 parts of a filler b, 2-10parts of a heat stabilizer, 0.5 to 2 parts of a lubricant, 0.2 to 0.8 part of an antioxidant a, 0.2 to 0.8 part of an antioxidant b, 0.2 to 0.8 part of an antioxidant c, and 1-3 parts of a processingmodifier. According to the invention, the problem of poor heat resistance of a polyvinyl chloride/nitrile rubber composite cable material system is solved, the temperature resistance grade is improvedto 105 DEG C from the original 80 DEG C, and the cable material can be applied to high-flexibility and high-toughness mobile cables such as household oil-resistant occasions, locomotive cables, robotcables and the like.