The invention discloses a ceramic silicone rubber composite insulated cable material which is prepared from the following components in parts by weight: methyl vinyl silicone rubber, 15-25 parts of ethylene-methacrylic acid copolymer, 5-10 parts of diphenyl silanediol, 12-15 parts of glass powder, 6-10 parts of boron nitride, 10-15 parts of magnesium oxide, 1-5 parts of fumed silica, 1-5 parts ofisopropyl titanate, dicumyl peroxide, methylphenyldiethoxysilane, 0.5-1 parts of 1,3-dimethyl-6-aminouracil, 0.5-1 part of fumed silica, 0.5-1 part of lithium chinastone powder and 1-2 parts of beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid pentaerythritol ester. The material is good in tensile resistance and impact resistance, the ceramic shell is uniform and compact in structure, not prone to cracking and good in insulating property, the reliability in actual application is improved, and the service life is prolonged.