The invention discloses double-temperature thermal safe silica gel. The double-temperature thermal safe silica gel comprises the following manufacturing materials in parts by weight: 100 parts of silicon rubber, 15 to 40 parts of white carbon black, 30 to 70 parts of heat-insulating filler, 15 to 40 parts of a heat-conducting filer, 10 to 35 parts of a flame retardant, 0.5 to 3 parts of a couplingagent, 5 to 10 parts of a structure control agent, 0.2 to 10 parts of a high-temperature catalyst, 0 to 5 parts of other aids and 0.4 to 2 parts of a vulcanizing agent. The double-temperature thermalsafe silica gel has the effects of dissipating heat at normal temperature or insulating heat at high temperature or under a fire disaster, and can dissipate heat generated by resistance, heat generation by friction as well as charging and discharging timely when being applied to components in a fire-resistant wire cable, a bus duct, an engine and a power battery to perform normal operation. Meanwhile, once the component is overheated to cause high temperature or fire disaster, the double-temperature material can be decomposed rapidly and can generate phase change under the action of a catalyst to form a hard ceramic material with a porous structure.